Question

Pls help on part A B and C plssssss

Answer 1

Part be just and all the cost and c i cant do good luck hope that helps

Answer 2

For part A, the answers are:
38.76
13.875
7.0
9.779

For part B, just add all the costs.

For part C, the answer is: 
You solve it trying Mr. Lowe's equation, you should get 75.0318.
To fill the empty box, what you need to do is tell them why his answer is right or why it's wrong.  I am doing it for you, you should fill that box with:

Mr. Lowe's equation was wrong because he added the numbers that have to be multiplied, and he multiplied the numbers that must be added.
The right equation is: 
(10.2 × 3.80) + (12.5 × 1.18) + (6.25 × 1.12) + (8.89 × 1.10) = 70.289