Answer:
8 granola bars in each box
Step-by-step explanation:
The equation is 4x+5x=72
4x and 5x are like terms, so combine those 9x=72
Use the division property of equality to solve for x, x=8
Your answer would be B: $25.20
24 x 5% is 1.2
$24 + 1.2 is 25.2
