Afamily of three goes to a salon. each person gets a haircut and highlights. the cost of each haircut is $15, and the cost per person for highlights is $x$ dollars. write and simplify an expression that represents the total cost (in dollars) for the family at the salon.

45+3.x

Step-by-step explanation:

Each person gets a haircut --> 3.15= 45

true

explanation:

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.