Marcus baked a loaf of banana bread fora party . he cut the loaf into equal size pieces . at end of the party , there were 6 pieces left . explain how you can find the number of pieces in the whole loaf if marcus told you that 1/3 of the loaf was left .use a drawing to show your work.

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