How does the coordinate rule for making two similar shapes relate to the scale factor ?

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

What is the total surface area of this square pyramid?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265