2 5/6 * 3 2/3 Please explain how to work it out and dont bot my question-​

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

Identify the number as a rational or irrational.explain. 127

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1