Answer:
120
Step-by-step explanation:
Due to an hour equaling 60 minutes, two hours would equal 120.
the first option
Start by substituting 15 for x. Then, simplify to get f(15)=36.
cuz
f(x)=2(x+3)
f(15)=2(15+3)
= 2×18=36
gimme brainliest plz
Option D is correct.
Decreases.