$28.60, 6.5% tax, 15% tip

$35.03

first multiply 28.60 times .065 for tax, then add that number to 28.60.
you will get 30.459

use this number and multiply it by .15 for tip, then add that number to 30.459.
you will get 35.02785

round off to the hundredths because that’s how money is counted.
final answer $35.03