Question

I just need to quickly know if my answers are correct thank you!

Answer 1

`D,D,E,D`

1) All of these questions are about evaluating those functions for each input.

9) So, let's check them out evaluating each one.

`\begin{gathered} f(4)\Rightarrow f(x)=((1)/(2)x)+13 \\ f(4)=((1)/(2)\cdot4)+13 \\ f(4)=2+13\Rightarrow f(4)=15 \\ D \end{gathered}`

10)

`\begin{gathered} f(x)=(3)/(5)x-10 \\ f(5)=(3)/(5)(5)-10 \\ f(5)=3-10 \\ f(5)=-7 \end{gathered}`

11)

`\begin{gathered} f(x)=x^2+7 \\ f(-1)=(-1)^2+7\Rightarrow f(-1)=1+7\Rightarrow f(-1)=8 \end{gathered}`

12)

`\begin{gathered} f(x)=3x^3-12x^2 \\ f(2)=3(2)^3-12(2)^2 \\ f(2)=24-48 \\ f(2)=-24 \end{gathered}`