Which of the following shows the best way to add - 45 and 105. Explain in a sentence explaining why you chose your answer. A) 45- 105

B) -(45 + 105)

C) 105-45

D) 105+45

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase