3/2x - 4 = 16
Add 4 to both sides.
3/2x = 20
Multiply by 2/3.
x = 13 1/3
$3.75 would be rounded up and changed to $4
C. It is always a rational number. You cannot determine its sign without knowing the values of a and b.
7/15 is your answer I am so happy that I could help :)