State whether each situation involves a permutation or a combination.
a. choosing a class president, vice president, and secretary.
b. four tennis players from a group of nine.
c. eight toppings for ice cream

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

It takes a total of 6 hours to fill up an inground backyard pool using a standard house. a function can represent this situation to represent the amount of water in the pool until it is full a function of time the hose is running. determine the domain for the function

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10