Y=7sin(πt/5)+13 Find the first four times that the waves reach their maximum height - 20m.
Find the first time that the weaves reach their minimum height- 6m.
When will the height of the waves be in the centre?

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x