A bedroom measures 18 feet by 20 feet. Find the cost to carpet at $4 per square foot.

$1440

Step-by-step explanation:

First, you need to find the area by multiplying 18*20, which is 360. Multiply 360 by 4 to find the cost to carpet the whole floor: 360*4 = 1440

$1440

Step-by-step explanation:

18·20=360 ft²

360·$4=$1440

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