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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.

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?