Select the correct answer. An online retailer developed two exponential functions to model the weekly usage of two coupon codes where x is the number of weeks since
the start of the year. The equation represents the weekly usage of code 1, and the table represents the weekly usage of code 2.

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

the answer is 20!

step-by-step explanation: