Answer:
x = 50
R = $2500
Step-by-step explanation:
Given in the question a quadratic equation,
−x² + 100x
To find the selling price, x, which will give highest revenue, y, we will find maximum value of parabola curve −x² + 100x
The value of -b/2a tells you the value x of the vertex of the function
−x² + 100x
here a = -1
b = 100
Selling price = -(100)/2(-1)
= 50
R = −(50)² + 100(50)
= 2500
V = l * w * h
240 = 20* h
divide both sides by 20
12 = h
height = 12 inches

m is the slope
b is the y-intercept
so that means that the y-intercept of

is

Hello,
the answer will be the last one
\
hope this help