Step-by-step explanation:
option number B.......
The amount of money he lose on the last tool set is: $30.60.
<h3>Amount lose</h3>
Using this formula
Amount lose=Original amount paid -Selling price
Where:
Original amount paid=$54.60
Selling price=$24.00
Let plug in the formula
Amount lose=$54.60-$24.00
Amount lose=$30.60
Therefore the amount of money he lose on the last tool set is: $30.60.
Learn more about amount lose here:brainly.com/question/11872053
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<span>denominator is </span>number below the line in a common fraction.
Here's picture to show what is a denominator:
Answer:

Step-by-step explanation:
Find the area of the 4 triangles and add them.
Area of triangle = base × height × 0.5
