Usually the easiest way to solve this is by using a calculator. Of course only if your teacher allows you too.
The entire picture is needed to solve. the bottom of the pic is cut off
26 feet * 12 inces per foot / 7.5 inches = 41.6, which is 41 full bracelets
$4.7 × 915 = 4300.5
$4300.5 + 79.15 = 4379.65
15% of 4379.65 = 656.9475
4379.65 + 656.9745 = 5036.6245
Mrs. Jones' Bill was $5036.63
(Rounded to the nearest 1/10)