Levi earns $6.25 per hour working after school. He needs at least $143.75 for a stero system. How many hours h does he need to work to reach his goal?

6.25h ≥ 143.75; h ≥ 23; 23 hours

To find out how many hours Levi needs to work to reach his goal, we need to divide the amount he needs by his hourly wage.

$143.75 / $6.25 = 23

So, Levi needs to work for 23 hours to reach his goal of $143.75.

To find out how many hours Levi needs to work to reach his goal of $143.75, we need to set up an equation. The equation would be:

$6.25/hour * h = $143.75

In this equation, $6.25/hour represents how much Levi earns per hour, and h represents the number of hours he needs to work.

To solve for h, we can divide both sides of the equation by $6.25:

h = $143.75 / $6.25

Dividing $143.75 by $6.25, we get:

h = 23

Therefore, Levi needs to work 23 hours in order to reach his goal of $143.75.