What is the perimeter of the triangle?

a: 4.5 inches
b: 13.5 inches
c: 9 inches
d: 18 inches

B. 13.5

Step-by-step explanation:

Add

4.5+4.5= 9

4.5+9=13.5

        =13.5

B. 13.5

Step-by-step explanation:

Perimeter is each side added up. Each side is the same. 4.5+4.5+4.5 = 13.5

The total cost for television company number 1 expressed as a function of x is

c1(x)=11.5x+120

That is the charge per month the number of hours plus the fixed charge for a one-time installation

Using the same pattern, write the function for the second television company. Then set the two functions equal to each other and solve for x.