George earns $12 per hour painting houses. If he works for 7 hours one day, how much does he earn?

To determine George's earnings for working 7 hours at a rate of $12 per hour, you simply need to multiply his hourly wage by the number of hours he worked. This calculation is as follows:

$12 (per hour) x 7 (hours) = $84.

Therefore, George earns a total of $84 for that day's work. This calculation demonstrates how hourly wages function and allows you to understand the basic principle of multiplying rate by time to determine total earnings.