In order to get the total price, we can multiply the 4 dollars by .05 to find 5 percent of the object's cost and add it to the sales tax. So, .05 times 4 is 0.2, meaning there is a sales tax of 0.2 dollars. We add that to the four, so the total price is 4.20 dollars. Hope this helps.
I hope this helps, I tried to make my handwriting as easy to read and to explain as much, I just used a calculator to compute all those values to find AC
<span>
5m + 2n + n - 3m + 7 - 3n
= 2m + 7
hope it helps</span>
4t + 4
2(3t + 4) - 2t
6t + 4 - 2t
4t + 4