Find f(-4) for f(x)=x^4-7x^2-12

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

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

Let r = 3. what is the value of r + 58?