Answer:
![y =( x +9 )* 4](https://img.qammunity.org/2020/formulas/mathematics/college/3qkh3irdgu7hasmr1lsk6ilomd55cr1i2v.png)
simplified
![y = 4x + 48](https://img.qammunity.org/2020/formulas/mathematics/college/gbgdr51w6bzlgpkmrccd7c092fxptkon14.png)
Explanation:
first know that the result would be y or f(x), because it's the function applied to x that makes it y. so its starts with either y= or, f(x)=
increasing by a number is multiplying, the word and is used for addition so
+9 ×4 will be in the equation
used PEMDAS, distribution, and combining like terms to simplify