Question

I need help with 7 I really don’t understand this

Answer 1

Step 1

Given;

`\begin{gathered} f(x)=-5(2x+1) \\ f(x)=-35 \end{gathered}`

Required;

`\text{find x}`

Step 2

Substitute f(x) and solve for x

`\begin{gathered} -35=-5(2x+1) \\ -35=-10x-5 \\ 10x=-5+35 \\ 10x=30 \\ (10x)/(10)=(30)/(10) \\ x=3 \end{gathered}`

Hence x=3