Write a function of $x$ for each rule given.

a$)$ Multiplies the input by $4$ and then adds $7$

$f(x)=$

b$)$ Adds $7$ to the input and then multiplies by $4$

$f(x)=$

c$)$ Divides the input by $11$ and then subtracts $9$

$f(x)=$

d$)$ Subtracts $9$ from the input and then divides by $11$

$f(x)=$

Next Question