We are trying to figure out how much was paid altogether. All we have to do is add $16.75 + 5%
But we have to figure out what 5% is first. We can do this by multiplying them together.
5% = 0.05
$16.75 x 0.05 = 0.8375
Now we just have to add :)
$16.75 + $0.8375 = 17.5075
Or if this number is rounded it would be $17.50
Good Luck! :)