Resuelva las siguientes operaciones y seleccione la alternativa correcta
a) 4/7 b) -7/4 c) 7/4 d) ninguna
( 2/7 ÷ 4/49 ) ∝ (1/2)

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?