A computer performs a calculation in 2.5 * 10 ^ - 5 seconds to solve a math problem. How long does the computer need to calculate the solutions to 3 * 10 ^ 6 * m * a * t problems? Write your answer in standard form.

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