Let x be Bob's age. Heather is 5 years younger than Bob. Write an expression for Heather's age.

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

What is the value of f(x) = 2.2 for f(-2)?

Which statement about the annual percentage rate (apr) is not true?