Question

The equation P=31+1.75w models the relation between the amount of Tuyet’s monthly water bill payment, P, in dollars, and the number of units of water, w, used. Find Tuyet’s payment for a month when 12 units of water are used.

Answer 1

Answer: $P = \ \ 52$

Step-by-step explanation:

We have the equation $P = 31 + 1.75w$ where P represents the payment and w represents the amount of water used.

To calculate the monthly payment that corresponds to 12 units of water you must do $w = 12$ in the main equation and solve for the variable P.

$P = 31 + 1.75w$

$P = 31 + 1.75(12)$

$P = 31 + 21$

$P = 52$