What does division sentence mean

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

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.

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)