Ch 4.1 and 4.2 Quiz Review

• growth

• decay

 $4\cdot5^x=y$  For the following, state whether it is exponential decay or growth.

• growth

• decay

 $\log\left(x\right)=y$  Identify the base

• 10

• 1

• 0

• 5

 $\ln\left(10\right)=y$  Identify the base

• e

• 10

• 1

• 100

 $\log_5\left(x+3\right)+6$  Identify the base

• 10

• 5

• 6

• 3

• reflect x axis

• reflect y axis

• left 2

• up 10

• right 2

 $f\left(x\right)=\left(\frac{1}{5}\right)\log\left(x\right)-4$  

Select the two shifts made to the parent function

• compress/shrink

• down 4

• right 4

• left 4

• stretch

 $\log_3x=y$  Change from log to exponential

•  $3^y=x$  

•  $3^x=y$  

•  $3=xy$  

 $\log\left(x\right)=5$  Change from log to exponential

•  $10^5=x$  

•  $5^x$  

• 5x

You start a savings account with $1500. The interest compounds weekly at 1.9%. Select the equation.