Imagine that you are a college student who lives away from home. you have a work-study job at your college library, and you earn about $600 each month. you have one major long-term goal: you want to save up money to visit your family soon, and you need at least $100 for your train tickets.

answer:

imagine that you are a college student who lives away from home. you have a work-study job at your college library, and you earn about $600 each month. you have one major long-term goal: you want to save up money to visit your family soon, and you need at least $100 for your train tickets.

explanation:

answer: you would be able to go in 1 month

the correct answer is b

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27