Question

a sprinkler uses 3 gallons of water per minute.
y = 3x
use the direct variation equation to calculate how many gallons are used if the sprinkler runs for 15 minutes.
? gallons

Explanation:

Step1: Identify the variables

In the equation \( y = 3x \), \( x \) represents the time in minutes and \( y \) represents the gallons of water used. We know the time \( x = 15 \) minutes.

Step2: Substitute the value of \( x \) into the equation

Substitute \( x = 15 \) into \( y = 3x \), we get \( y = 3\times15 \).

Step3: Calculate the value of \( y \)

\( 3\times15 = 45 \).

Answer:

45