(Didn't see a response from yesterday, so reposting)
1 . Sam has $575 in his savings account. He wants to save at least $50 for a video game coming out in a couple of months. He spends $75 a week on food and transportation. What is the most amount of weeks he can pull from his savings account to be able to buy the video game?
ANs: 575 - 75w >= 50
-575 -575
-75w >= -525
-75w/-75 >= -525/-75
w <= 7 weeks
2. Allison practices Violin. She practices for 3 hours each practice session. If she already practiced 1 session this week how many more sessions does she need to do to practice at least 12 hours.
ANs: 3s + 3 >= 12
-3 -3
3s >= 9
3s/3 >= 9/3
s >= 3 sessions
correct answers, but this step was wrong:
-75w >= -525
-75w/-75 >= -525/-75
You should have changed the direction of the inequality at this point, not waited till the next step.