Module 7 Practice Formative HAlg2

Which statements are true for exponential functions?

• Domain is all real numbers

• Range is all real numbers

• It has a vertical asymptote

• It has a horizontal asymptote

 $f\left(x\right)=2^{\left(x+1\right)}-4$  What is the asymptote

• y=-1

• y=-4

• x=-1

• x=-4

The inverse of an exponential function is ...?

• A square root function

• A radical function

• Another exponential function

• A logarithmic function

Which exponential expression is equivalent to

 $\log_5x=3$  

•  $5^3=x$  

•  $5=x^3$  

•  $3^5=x$  

•  $x^5=3$  

Initially there are 40 bacteria in a dish. They will triple every 15 minutes. Which function represents the scenario?

• $B\left(t\right)=40\left(3\right)^t$

• $B\left(t\right)=40\left(3\right)^{15t}$

• $B\left(t\right)=40\left(3\right)^{\frac{t}{15}}$