An item costs c dollars and 6% sales tax is charged. The total cost including sales tax is given by the expression 1.06c. You are buying a skateboard that costs $75. What is the cost of the skateboard including sales tax?
1.06 * 75 = ?
To find the cost of the skateboard including sales tax, we need to multiply the original cost of the skateboard by 1 plus the sales tax rate.
Given that the original cost of the skateboard is $75 and the sales tax rate is 6%, we can calculate the total cost as follows:
Total cost = Original cost + (Sales tax rate * Original cost)
= $75 + (0.06 * $75)
= $75 + $4.50
= $79.50
Therefore, the cost of the skateboard including sales tax is $79.50.