There are 140 seats in the school auditorium. There are 7 seats in each row. There are 70 people seated, filling up full rows of seats. How many rows are empty?

There are??? empty rows

Which best explains why this triangle is or is not a right triangle?

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x