Answer:
Nathan paid $128.3251 for all the items, including tax.
Explanation:
∵ Nathan bought a pair of boots for $79.95
∵ Nathan bought 2 shirts for $19.99 each
→ Find the total price of them
∴ The total price of the items = 79.95 + 2(19.99)
∴ The total price of the items = 79.95 + 39.98
∴ The total price of the items = $119.93
∵ The sales tax is 7%
→ That means we will add 7% of the total price to the total price
∴ Nathan paid = 119.93 + 7%(119.93)
∵ 7% = 7 ÷ 100 = 0.07
∴ Nathan paid = 119.93 + 0.07(119.93)
∴ Nathan paid = 119.93 + 8.3951
∴ Nathan paid = $128.3251
∴ Nathan paid $128.3251 for all the items, including tax.