If d varies directly as t and d=20.5 when t =12 find the value of constant

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

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