Which of the following represents a function? a. (5,1), (5,2), (5,3), (5,4)
b. (3,9), (-7,1) (6,12), (-3,-9)
c. (-5,6), (-5,6), (-5,6), (-5,6)
d. (8,3), (8,3), (-8,-3), (-8,-3)

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.

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?