An item costs c dollars and 6% sales tax is charged. the total cost including sales tax was given by the expression 1.06c. you are buying a skateboard that costs $75. what is the cost of the skateboard including sales tax?

The cost with sales tax would be $79.5

Step-by-step explanation:

We know that the total cost of an item including sales tax is given by the expression 1.06c where c is the cost of the item.

Now we're required to find the cost of the skateboard including sales tax, the skateboard has a cost of 75 dollars, therefore c = 75.

Total cost including sales tax = 1.06c = 1.06 (75) = 79.5.

Therefore, the cost of the skateboard including sales tax would be $79.5.

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