5. A specialty muffin company makes muffins for $0.24 per muffin. The starting cost of the company is $500. How many muffins must the company make before the average cost per muffin is $0.39? Round your answer
to the nearest whole number.
a. Write an equation that represents this situation.
b. How many muffins must they make in order for the cost per muffin to average $0.39?

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

the answer is:

mean: 6

mad: 2.14