Given:
a.) Clyde ordered two sweaters ($39.50 each).
b.) He had to pay 4% sales tax and a shipping charge of $3.50.
Step 1: Let's first determine the total cost of sweaters that Clyde ordered:
[tex]\text{ No. of sweaters x Price of sweaters = 2 x 39.50}[/tex][tex]\text{ = \$79.00}[/tex]Step 2: Let's determine the sales tax.
[tex]\text{ Sales tax = Total price of sweaters x }\frac{\text{\% tax}}{100}\text{ = 79 x }\frac{\text{4}}{100}[/tex][tex]\text{ Sales tax = 79 x 0.04 = \$}3.16[/tex]Step 3: Let's add all.
[tex]\text{ Total price = Price of sweaters + Sales tax + Shipping charge}[/tex][tex]\text{ = 79 + 3.16 + 3.50}[/tex][tex]\text{ Total price = \$}85.66[/tex]Therefore, the total amount is $85.66
The answer is letter C.