3b - 7 < 32
=> 3b < 32 + 7
=> 3b < 39
=> b < 39÷ 3
=> b < 13
Hope it helps !!!
Answer:
Probably because they don't want a whole paragraph on some answers
She saved $45 and now only has to pay $105
We can write a proportion
10,000 identical samples is 100 pounds
10 identical samples is x pounds
10000/10 = 100/x
10000x=10*100
x=1000/10000=1/10=0.1
x=0.1 pound
10 samples have the weight 0.1 pound.