If 64 feet of rope weighs 20 pounds how much will 80 feet of the same type of rope weigh?

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

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?