Problem in questions, find a basis for w^l wis the line in r^3 with parametric equations x = t y =2t

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

What is the simplified form of square root of 400 to the 100th power ?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25