The total cost of the skateboard is $85.6.

Explanation:

The total cost of the skateboard would be $80 plus the sales tax that is 7% of the price. So, you have to multiply $80 for 7% to determine the amount that would be paid as sales tax:

$80*7%=$5.6

Then, you have to add the price of the skateboard with the tax to have the total cost:

$80+$5.6= $85.6

After you multiply 7% to 80 you will be left with 5.60, then you add 5.60 to 80 to get $85.60. So if she has any more than $85.60 then she will be able to buy the skateboard

7% in decimal form is .07 so you multiply that by 80 and it gives you 56 so you subtract it by 80 and gives you 4 and you add 80 to it so the answer is $84

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