Ellen's classes are 55 minutes each with 10-minute passing periods. If she has 4 classes before lunch break, and there is no passing period before first period or
immediately before lunch, approximately how many hours before lunch do her classes
start?

Solve the system of equations. y= 2x y= x^2 - 15

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?