Which expression is equivalent to (0.5x+7)−(1.2x−3)? (0.5x+(−1.2x))+(7+3) (0.5x+1.2x)+(7+(−3)) (0.5x+1.2x)+(7+3)

Sara bought a pair of pants that were on sale for 30 percent off of the original price. if the original price of the pants was $29, what was the sales price of the pants?

Ineed no it anyone can see this

What number line represents the solution set for the inequality -1/2 greater than or equal to 4