4)
565 + 87x = 1,000
87x = 435
x = 5
each guest must bring 5 cans to meet the goal, therefore your answer is d
answer: D
2)
step 1: -6(x+3) + 10 < -2
step 2: -6x - 18 + 10 < -2
step 3: -6x - 8 < -2
step 4: -6x < 6
step 5: x > -1
she messed up between the last two steps because when you divide across the sign by a negative number, you must flip the sign.
answer: D
3)
85 - 4x < 40
-4x < -45
x > 11.25
mr. schwartz will need to order more wheels after building 12 cars, because after 11 cars he will still have over 40, yet after 12 he’ll fall under.
answer: 12
5)
.3(x - 4) > -0.3
.3x - .075 > -0.3
.3x > -.225
x > -.75
answer: i did the number line thing in the image below
