Final Exam Review 12/12

• {1, 2, 3, 4, 5}

• {-1, 1, 2, 3}

• {1, 2, 3, 5}

• [1, 5]

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• y = 15(35)^x

• y = 15(1 + .35)^x

• y = 15(1 - .35)^x

• y = 15(.35)^x

The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the exponential equation?

• y=15,000(8)^x

• y=15,000(1 + .08)^x

• y=15,000(1 - .08)^x

• y=15,000(0.08)^x

A company is selling bubble gum.  The function g(x)=3x+4 tells the company how much to charge if someone buys x packages of bubble gum.  Find g(8) and tell what it means within the context of the problem.

• g(8)=8.  This means that after 8 packages of gum, the company makes $8.
• g(8)=42.  This means that 8 packages of gum costs $42.
• g(8)=28.  This means that 8 packages of gum costs $28.
• g(8)=24.  This means that 8 packages of gum costs $24.

Tags

CCSS.HSF.IF.A.2

The county fair charges $10 admission and $1 per ride ticket. Juan makes a graph to show the total cost depending on how many ride tickets are bought. Which is a true statement?

• The y-intercept is 1.
• The x-intercept is 10.
• The graph has a slope of 1.
• The graph has a slope of 10.

Tags

CCSS.8.EE.B.5

What is the y-intercept of the function?

• 2

• 3

• 1

• -2

What is the x-intercept of the exponential function? 

• (0,1)
• (0,0)
• There is not one

Given f(x) = 3(4)^x determine the y-intercept

• (0,3)

• (0,4)

• (3,0)

• (4,0)

Identify the y-intercept (initial value) in the function f(x)=13(.5)^x

• (13,0)

• (.5,0)

• (0,13)

• (0,.5)

Suppose you deposit $3000 in a savings account that pays interest at an annual rate of 4%.  What  is the rate?

• .4
• .96
• .04
• 1.04

Tags

CCSS.8.EE.C.7B