What is the following sum? 4(5 sqrt x^2y)+3(5 sqrt x^2y) right answer pls unlike the other guy who posted

Ifigured out the question and i dont know what to put here

Which function is represented by the graph

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.