A) The cost of an avocado (a) can be modeled by the function f(a) = 1.5a What is a reasonable DOMAIN for this function? a. All real numbers b. All positive integers c. All integers d. 0<x<1.5​

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

hi there, i would be interested to you with your test, may you add the questions and answer options.

- : )