Amy bought 3 pounds of lemons at $2 per pound a box of rice for $4, and 7 frozen dinners for $3 each. what is the change in the amount of money she has ?

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.