Answer:
9 dollars and 40 cents
Step-by-step explanation:
Its an increase
30 to 90
I= 100 x (f-i)/i
I= 100 x 90-30/30
I= 100 x 2
200% increase
looking at the graph,
when x = 3, y = -10
-10 = 2(3)^2 + 3b + 8
-10 = 18 + 3b + 8
-10 = 26 + 3b
3b = -36
b = -36/3
b = -12
6
11x + 6y + 37
