I need help please... I don’t know the constant of proportionality... please I need this quick

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

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.