Whats The Answer Marking Brainliest, Please explain your D.Please HELP

Find an equation for the linear function which has slope -10 and x-intercept -7

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.

Use the distance formula to find the distance between (-3,5) and (3,1)