Answer:
Step-by-step explanation:
Last week he worked h hours mowing lawns and three times as many hours gardening. This means that the number of hours he worked, gardening is 3h.
Matt earns $9.00 per hour mowing lawns and $8.50 per hour gardening. Therefore, an expression to show the amount of money Matt earned last week is
(9 × h) + (8.5 × 3h)
= 9h + 25.5h
= 34.5h