Through any non-collinear points there is exactly one plane

Find the given elements if matrix d:

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

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3