Can someone pls help me expand and simplify 2(3x+4) - 3 (4x-5)

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

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?