Final answer:
To find the total cost of the items before tax was added, subtract the sales tax paid from the total cost. In this case, the total cost is d. $68.48.
Step-by-step explanation:
To find the total cost of the items before tax was added, we need to subtract the sales tax paid from the total cost. In this case, the sales tax amount is given as $4.28, and the sales tax rate is 6.25 percent.
Let's assume the total cost of the items before tax as x.
Now, we can write an equation to represent this situation:
- The sales tax amount is 6.25% of the total cost: 6.25% * x = $4.28
To solve this equation, we divide both sides by 6.25% (or 0.0625) to isolate x:
- x = $4.28 / 0.0625 = $68.48
Therefore, the total cost of the items before tax was added is d. $68.48.