Answer:
That's the graph for the function f(x)= -1/2 x^2 + 7
The vertex is f(0) = 7
X-0.20x=5.56
Solve for x
So the original price is
X=6.95
for the 0 u put zero the for 5 u put 40 then for 10 u put 80 then for 15 u put 120 then for 20 u put 160
Answer:I feel bad
Step-by-step explanation: