Final answer:
Kareem's hourly rate after the raise will be $18.40.
Step-by-step explanation:
To calculate Kareem's hourly rate after the raise, we need to find the 15% increase in the amount he earns per hour. First, let's determine how much Kareem earned per hour last month by dividing his total earnings ($480) by the number of hours he worked (30). Kareem's hourly rate was $16 per hour. Next, we'll find the 15% increase of $16 by multiplying $16 by 0.15. The increase is $2.40. Finally, we'll add the increase to Kareem's original hourly rate: $16 + $2.40 = $18.40. Therefore, his hourly rate after the raise will be $18.40.