1. evaluate each expression when x = -2 and y = 3. a) 3x + 4y b) 2x - 3y + 5 c) 4x - y d) -x - 2y e) x + y f) y - x

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same

Which is the scale factor proportion for the enlargement shown?