3(7+5p) + p = 21 + 5p

This is so hard and it’s for a test

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

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