Answer:
F. 28
Step-by-step explanation:
Step 1: Write equation
0.8x - 12 = 0.3x + 2
Step 2: Solve for x
Subtract 0.3x on both sides: 0.5x - 12 = 2
Add 12 to both sides: 0.5x = 14
Divide both sides by 0.5: x = 28
Step 3: Check
Plug in x to verify it's a solution.
0.8(28) - 12 = 0.3(28) + 2
22.4 - 12 = 8.4 + 2
10.4 = 10.4
