I think it is (10,-7) but lmk otherwise
Answer:
hbw ygav
Step-by-step explanation:
Answer:
600
Step-by-step explanation:

x max = 
a = -5
b = 6
-6/2(-5) = 6/10 = 3/5 = .6
.6 thousand = 600
600 speakers should be sold.
Alternatively, you can check the vertex of the parabola formed.
Answer:
he got 40
Step-by-step explanation:
10/0.25