On Saturday, Louise ran 19/4 miles, Beth ran 45/10, Staci ran 4 3/5 miles. Which list shows these distances in order from greatest to least? a) 19/4 miles, 4 3/5 miles, 45/10 miles b) 4 3/5 miles, 45/10 miles, 19/4 miles c) 45/10 miles, 19/4 miles, 4 3/5 miles d) 45/10 miles, 4 3/5 miles, 19/4 miles (show all steps you took to get the answer)

x^3-4x^2+3x-2/x^2+1

step-by-step explanation:

factor the numerator and denominator and cancel the common factors

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