The perimeter of the rectangle below is 64 units. Find the length of side PQ. Write your answer without variables

perimeter of the rectangle is 64

so

64=2(3y+2+2y)

32=5y+2

30=5y

6=y

so

PQ=3×30+2=92

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x