Answer:
or

Step-by-step explanation:
Let x be the input and f(x) or y represent output.
The function in this case is given as firstly we will take seven times of the input and subtract eight to it, to obtain the required output.
Answer: 3x^2 +120x
Good luck !
Answeyou should google it :3 ( oh and add meh on roblox. user:ItzAaly)
Step-by-step explanation:
but i think that the answer is C :The surface area increases by 4 times.