A sporting complex charges $7 to use its facility. the expression 0.15 b + 7 models the total cost to hit b baseballs in the batting cages what is the cost per ball

y=mx+b

step-by-step explanation:

m slope

b y-intercept

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

1

x = 1

step-by-step explanation:

0 ÷ x = 0

0 ÷ 1 = 0