Answer:
D.
Step-by-step explanation:
Form an equation. 593 = 418 + 12.50d
The variable d represents how many days she needs to pet-sit for.
Use the subtraction property of equality by removing 418 from both sides.
593 - 418 = 418 - 418 + 12.50d
175 = 12.50d
You will need to divide both sides by 12.50 to get the variable by itself.
14 = d
You've gotten the answer now, 14.
