Answer:
69.9 thats it . ur welcome
Step-by-step explanation:
can i get brainliest
60
Because 7.7^2 equals 60,
true, true, false
the sales do not decrease between week 4 and 5
f(4) = 3×4^2+15
4^2=16
3×16
48+15
63
f(4)=63
