Can someone help me out with this?

Of four points are collinear, they are also coplanar

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

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