Math 1 Finals

Which graph shows the solution for the system of inequalities below?

• A

• B

• C

Tags

CCSS.HSA.REI.D.12

The amount of medicine in Elizabeth’s blood is modeled by the function M(t) = t² - 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 hours

• 10 hours

• 25 hours

What is the smallest positive integer for x, so that the value of f(x) = 200(2)^x is greater than the value of g(x) = 500x + 400?

What is the y-intercept of the function f(x) = 3(2x - 4)?

• (0, -4)

• (0, -2)

• (0, 1)

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

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. Which equation gives y, the height of the ball after x bounces?

• y = 10(2/3)^x

• y = 10(3/2)^x

• y = 3(10)^x

Tags

CCSS.HSF.LE.A.2

Which expression is equivalent to 3(x - 4)^2?

• 3x² + 48

• 3x² - 24x + 48

• 9x² - 72x + 144

Tags

CCSS.HSA.APR.C.4

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?

Tags

CCSS.8.EE.C.8C

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

Tags

CCSS.7.EE.B.4B

The expression 5t² + 40t predicts the height, in meters, of an object t seconds after a person launches it into the air. Using this expression, how many seconds will it take the object to hit the ground?

The function f(x) = 1/2 x - 6 was replaced with f(x + k) = 1/2 x - 4. What is the value of k?