18. In Ms. Bell's class, the ratio of boys to girls is 5:4.
a) There are 15 boys in the class.
How many girls are there?
b) Two girls leave. What is the new
ratio of boys to girls?

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

Mason and christian go to the movie theater and purchase refreshments for their friends. mason spends a total of $45.75 on 3 bags of popcorn and 6 drinks. christian spends a total of $71.50 on 6 bags of popcorn and 4 drinks. write a system of equations that can be used to find the price of one bag of popcorn and the price of one drink. using these equations, determine and state the price of a drink, to the nearest cent.

How do you write 600 as a product of its prime factors (index! )