Question

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?

1) 310-8w
2) 280+30(w-1)
3) 310w-30
4) 280-30(w-1)

Answer 1

D- 280-30(w-1)

EXPLANATION - we read the questions and create 310-30w as an equation, but we have to find another way that is equivalent to A B C or D. If you take D-280-30(w-1) and distribute to get 280-30w+30 then you have to combine like terms to get 310-30w.

Answer 2

Hey you man what are you doing here go to there