Algebra 1 Final Exam Review

What is g(7) if:

• -17
• -13 
• 13       
• 17

A holiday meal costs $12.50 a person plus a delivery fee of $30. Which equation represents the amount a holiday meal costs, including delivery, for x people?

• y = 30 + 12.5x

• y = 12.5 − 30x

• y = 12.5 + 30x

• y = −12.5x +30

Sandra has a $20 gift card and spends $3 each month. Which equation can be used to find how much money Sandra has on her gift card after x months?

• y = 3x + 20

• y = 3 + 20x

• y = −3x + 20

• y = −20x + 3

Which of the following points is a y-intercept?

(−2,3) (4, −2) (0, 5) (−9,0)

• (−9,0)

• (−2,3)

• (4,−2)

• (0,5)

The number of bacteria in a petri dish changes based on the function

g(x) = 200(1.2)^x where g(x) represents the total bacteria after x number of months. Which statement best describes the 200 in the function?

• the initial number of bacteria

• The number of bacteria grows by 200 each month.

• The 200 represents 20% in the problem.

• the rate of change

Is this exponential growth or decay?

• Growth
• Decay

Tags

CCSS.HSF-IF.C.8B

Is this exponential growth or decay?

• Growth
• Decay

Which equation matches the table?

• y = x + 5

• y = x − 5

• y = −x + 5

• y = −x − 5

What is the equation for the table?

• y = 1/4x − 3

• y = 4x − 3

• y = −3x − 3

• y = −2x − 3

Find the vertex of

f(x) = −x² − 4x + 12

• (−2, 16)

• (2, 0)

• (2, 4)

• (−2, 4)