Answer:
$8.10 (Malia) > $8.05 (Bill)
Explanation:
The unit rate for Malia is $8.10 as stated in your equation.
We can find the unit rate for Bill by dividing the amount he earned by the hours he worked. 144.9/18 = 8.05 = $8.05 per hour.
As to how they would compare, Malia earns more in an hour than Bill, by 5 cents.