5.6, 6.1, 6.2 Quiz

Which of the following is the inverse of $y=\frac{1}{2}x-5$ 

•  $y=2x+10$  

•  $y=2x-10$  

•  $y=x+5$  

•  $y=x-5$  

Tags

CCSS.HSF-BF.B.4A

 Are the following functions inverses?

 $f\left(x\right)=\frac{5-x}{2}$ and  $g\left(x\right)=5-2x$  

• yes

• no

Tags

CCSS.HSF-BF.B.4B

 Are the following functions inverses?

 $f\left(x\right)=4x^2+3$ and  $g\left(x\right)=-\frac{x-3}{4}$  

• yes

• no

Tags

CCSS.HSF-BF.B.4B

Which of the following functions represent exponential growth?

• $y=3^x$

• $y=\left(\frac{1}{5}\right)^x$

• $y=\left(\frac{3}{2}\right)^x$

• $y=\left(1.6\right)^x$

• $y=\left(0.5\right)^x$

Tags

CCSS.HSF-IF.C.8B

The value of a rare coin y (in dollars) can be approximated by the model $y=0.25\left(1.06\right)^t$  where t is the number of years since the coin was minted. Tell whether the model represents exponential growth or exponential decay.

• Growth

• Decay

Tags

CCSS.HSF-IF.C.8B

The value of a rare coin y (in dollars) can be approximated by the model $y=0.25\left(1.06\right)^t$ where t is the number of years since the coin was minted. What was the original value of the coin?

The value of a rare coin y (in dollars) can be approximated by the model $y=0.25\left(1.06\right)^t$ where t is the number of years since the coin was minted. Identify the annual percent increase or decrease in the value of the coin.

Tags

CCSS.HSF-IF.C.8B

The value of a truck y (in dollars) can be approximated by the model $y=54,000\left(0.80\right)^t$  where t is the number of years since the truck was new.  Tell whether the model represents exponential growth or exponential decay.
        

• Growth

• Decay

Tags

CCSS.HSF-IF.C.8B

The value of a truck y (in dollars) can be approximated by the model $y=54,000\left(0.80\right)^t$ where t is the number of years since the truck was new. Identify the annual percent increase or decrease in the value of the truck.

You deposit $3000 into a bank account that pays 1.25% annual interest, compounded semi-annually. How much interest does the account earn after 4 years? (Do not include $ sign)