Answer:
x>9
Step-by-step explanation:
-4x + 15 < -21
Subtract 15 from each side
-4x + 15-15 < -21-15
-4x < -36
Divide each side by -4, remembering to flip the inequality
-4x/-4> -36/-4
x >9
i'm not sure how to solve the first one but the second is 150
8x + 15 = 31
Or
16 + 15 = 31
Not entirely sure if this is what you were asking for but I hope this helps!
3,467 divided by 7 will give you the amount sold per day..
3,467 divided by 7 is <span>495.28571... round this to 495
about 495 were sold per day</span>