Summer Bridge Review for Post Test

Mark and Jose have a combined weight of 270 pounds. Mark weighs 30 pound less than twice Jose's weight. How many pounds does Jose weigh?

• 170

• 100

Jessi works as a lifeguard and the function that represents her pay is $f\left(x\right)=7.75x$  .  When she babysits the function that represents her pay is  $g\left(x\right)=5x+10$  .  Which function represents her total pay? 

•  $t\left(x\right)=12.75x+10$  

•  $t\left(x\right)=12.75x$  

•  $t\left(x\right)=12.75x+17.75$  

•  $t\left(x\right)=7.75x+15.00$  

What is the equation that represents the exponential function in the image below?

• y=3(½)^x
• y=3(2)^x
• y=(2)^x
• y=2(3)^x

Is the pictured graph growth, decay, or linear or none?  

• Growth
• Decay
• Linear
• None

Find the average rate of change for Jayshawn's height over the interval   $3\le x\le5$  

• 2 inches per year

• 2 years

• 8 inches per year

• 4 inches per year

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.

Given f(x) = -4x - 10 and f(x) = 10. Find x

• x = -5

• x = 5

• x = -50

• x = 30

Is the table linear or exponential?

• Linear
• Exponential

Is the Equation Linear or Exponential?

• Linear
• Exponential

The population of Cary, NC in the year 2000 was 97,400 people. The population steadily grew by 2.5% each year. What type of function is this?

• Linear 
• Exponential 
• Neither