15. Fatima bought a video game that has a
regular price of $45. The game was on
sale for 15 percent off, and she paid
sales tax of 7 percent. What was the
price Fatima paid for the video game?

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

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?  

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?