This is an incomplete answer sorry
The answer is 3X + 12 because in he distributive property you must multiply both the 3X and the 4 by 3
3x1=3 hence the 3X
and 3x4 = 12 <span />
$37.5
50×25÷100 give i the money of 25 percent off which is 12.5
Than you do the difference 50-12.5=37.5
First, before multiplying to cancel the fraction, let's isolate x by subtracting both sides by 3:
b/9 < 1
To cancel out the fraction, we multiply both sides by 9:
x < 9