Chris and lisa went shopping and spent a total of $25.50. lisa spent $13.50 more than chris spent. hiw much did lisa spend?

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

When a rectangle is dilated, how do the perimeter and area of the rectangle change?