5d 2 + 4d - 3 less 2d 2 - 3d + 4

3d2 + 7d - 7
3d2 - 7d - 7
7d2 + 7d - 7
7d2 + d + 1

Just tell me how to set up the equation.

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.

Which of the functions graphed below has a removable discontinuity?