Given a and b are numbers, and a+b=180, which statements also must be true

Toyland is having a sale. all items are 20% off. how much will you save on an item that usually sells for 95$ explain your

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol

Andy has $310 in his account. each week, w, he withdraws $30 for his expenses. which expression could be used if he wanted to find out how much money he had left after 8 weeks?