What is the length of the diameter?

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

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Twelve less than a number is at most 20