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Dr. Silas studies a culture of bacteria under a microscope. The function b(t)=50(1.4)^t represents the number of bacteria t hours after Dr. Silas begins her study.a) What is the y-intercept of the function? What does this mean in the context of the problem?b) Is this exponential growth or decay? How do you know?c) How many bacteria would there be 5 hours after Dr. Silas began her study?Please show all your work!
General
7 months ago
Which graphic organizer would help you visualize important events in the history of the U.S. space program? timeline point-by-point diagram cause-and-effect chart Venn diagram
General
7 months ago
Which equation represents a football player who runs 5yds/sec and starts on the 25 yard line?Question 1 options:y = 5x + 25y = 5x - 25y = 25x + 5y = 25x - 5Based on these equations, which one represents the greatest rate?Question 2 options:y = 1/2 x + 8y = 2x + 4y = 4x + 2y = 7x + 5
General
7 months ago
How are exponential functions related to logarithmic functions?Model that with an example.
General
7 months ago
HURRY PLEASE!!!! I WILL GIVE BRAINLIEST!!!!!!!A school sold small and large boxes of fruit for a fundraiser. One student sold 5 small boxes and 13 large boxes for $232. Another student sold 12 small boxes and 7 large boxes for $218. Their sales can be represented in two equations where x represents the price of the small boxes and y represents the price of the large boxes. Which constants can be multiplied by the equations so one variable will be eliminated when the systems are added together? Check all that apply.1 The first equation can be multiplied by –12 and the second equation by 5 to eliminate x.2 The first equation can be multiplied by 5 and the second equation by 12 to eliminate x.3 The first equation can be multiplied by –7 and the second equation by 13 to eliminate y.4 The first equation can be multiplied by 7 and the second equation by –13 to eliminate y.5 The first equation can be multiplied by 12 and the second equation by –5 to eliminate x.6 The first equation can be multiplied by 7 and the second equation by 13 to eliminate y.
General
7 months ago
match the following Match the inequality to its graph. 20 points and brainiest.
General
7 months ago
A triangular prism and two nets are shown:Which is the correct net of the prism and what is the surface area of the prism?
General
7 months ago
table Mary used Delicious (d) and Golden Delicious (g) apples to make homemade applesauce. Delicious apples are $0.75 each and Golden Delicious apples are $1.25 each. Mary spent $21.00 on 22 apples. How many Golden Delicious apples did Mary buy?
General
7 months ago
what is the best definition for marginal cost?
General
7 months ago
Which of the following is an advantage of an observational study over a sample survey? A)Observational studies are not dependent on people’s responses, which may not be truthful. B)Observational studies involve the random selection of subjects. C)Observational studies do not manipulate variables. D)Observational studies do not involve treatments.
General
7 months ago
Which graph represents the function f(x)=2x/x^2-1
General
7 months ago
Kevin calculated the product of 3.2 × 104 and 3.6 × 102 as 11.52 × 106. Which is the next step that Kevin should apply to his solution?
General
7 months ago
The graph shows the number of paintballs a machine launches, y, in x seconds.Which expression can be used to calculate the rate per second at which the machine launches the balls?A) 80/4B) 20/4C) 4/80D) 4/20
General
7 months ago
A field project superintendent earns an annual salary of $72,800, and she contributes $7900 per year to her 401(k) plan. If she has a required deduction for income taxes (federal, state, and local combined) of 28% of pretax income, how much does she have withheld in income taxes per year?
General
7 months ago
Given the information below, match the following items.Given statement: If two angles add to 180°, then they are supplementary.1.converse 2.inverse 3. contrapositiveIf two angles are supplementary, then they add to 180°If two angles do not add to 180°, then they are not supplementary. 3.contrapositive If two angles are not supplementary, then they do not add to 180°.
General
7 months ago
The graph shows the distance, y, in miles, of a moving motorboat from an island for a certain amount of time, x, in hours.What is the speed of the motorboat?A) 225 miles per hourB) 25 miles per hourC) 75 miles per hourD) 50 miles per hour
General
7 months ago
David drops a ball from a bridge at an initial height of 100 meters.(a) What is the height of the ball to the nearest tenth of a meter exactly 3 seconds after he releases the ball? (b) How many seconds after the ball is released will it hit the ground?
General
7 months ago
The volume of a cylinder varies jointly with the square of the radius and the height. If the volume of a cylinder is 50.265 cubic inches when the radius is 2 inches and the height is 4 inches, what is the volume when the radius is 3 inches and the height is 7 inches?
General
7 months ago
glacier is moving at a rate of 0.3 inches every hour. The table below represents this relationship.Glacial MovementDistance Moved (inches)Time(hours)0.310.620.93x4What value of x completes the table? 1.21.53.613.3
General
7 months ago
ShoeShop is having a sale on flip-flops. The first 2 pairs cost $8.50 each plus each additional pair costs $3.75. Mrs. Tyler can spend a maximum of $34.75 on flip-flops for her family.Which inequality can be used to find the number of flip-flops, p, that Mrs. Tyler can purchase from ShoeShop?
General
7 months ago
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