Which expression would be equivalent to: Which expression would be equivalent to: \frac{1+b}{2} - 3(a-1)

Im literally having a mental breakdown

You are shooting hoops after school and make 152 out of a total of 200. what percent of shots did you make? what percent did you miss? show proportion(s).

Sweet t saved 20 percent of the total cost of the green-eyed fleas new album let there be fleas on earth. if the regular price is $30 how much did sweet save