EOC Review #2

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A school opened with 100 students. The number of students has increased by 25% each year since the school opened. Which function can be used to determine the number of students at the school x years after it opened?

100(1.25)^x

Jane owns x comic books. Derrek owns y comic books. *The number of comic books Jane owns is 1 less than 2 times the number Derrek owns. *Together they have a total of 11 comic books. How many comic books does Derrek own?

4

A liquid is evaporating. The amount of liquid remaining, in liters, after x weeks is modeled by the equation y=100(0.78)^3x. Approximately what percent of the liquid evaporates per week?

47

James is at a gift sale where everything costs $4(tax included) *James has $50 *James must have a least $28 remaining when he is finished buying gifts. What is the greatest number of gifts James can buy?

5

The amount of medicine in Elizabeth's blood is modeled by the function M(t)=-t^2 +10t, where t is the number of hours after she takes the medicine. How many hours after Elizabeth takes her medicine is the amount of medicine in her blood the highest?

5

A quadrilateral has vertices at (-8,0),(-4,-4),(0,8), and (4,4). What is the area of the quadrilateral?

64

Which situation could be best modeled with an exponential function? A. The value of a car that loses 6% of its value per year. B. The cost to purchase different weights of bananas at a store. C. The total number of miles run by a person who runs 8 miles per day.

The value of a car that loses 6% of its value per year.

A girl drops a ball from a height of 10 feet. Each time the ball hits the ground, it bounces to 2/3 its previous height. What equation gives y, the height of the ball after x bounces?

y=10(2/3)^x


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