Solve each equation 3x+2(5x-3)=7

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Ms. ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms. ortiz charge per kilogram of tomatoes to make on a load of tomatoes?