You are making a blanket with a fringe border of equal width on each side.
xin.
72 in.
48 in.
xin 7

1010: 3030

is it i think

can i see the following ?

step-by-step explanation:

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