A student has some $1 and $5 bills in his wallet. He has a total of 15 bills that are worth $39. How many of each type of bill does he have?

Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.

Does the point (1, sqrt 7) lie on circle shown.