Answer:
20m
Step-by-step explanation:
Answer: x=4
5x=15+5
15+5=20
5x=20
divide 5 on both sides
20/5=4
x=4
f(4) = 3×4^2+15
4^2=16
3×16
48+15
63
f(4)=63
What is it steepest slope?
