What is a composite number between 70 and 80

Ifurniture stores having a weekend sale and is offering 20% discount on patio chairs and table the sales tax on furniture is 6.25 using function composition how can you represent the total amount a that you would need to pay for this furniture that cost x dollars

5/6+7/8what is the answer sealsdbdbshd

When rolling 26 sided number cube what are the chances some of the role will be seven