Fred did 243 sit-ups in 9 minutes.
Julio did 128 sit-ups in 4 minutes.
Holly did 144 sit-ups in 9 minutes.
Olivia did 60 sit-ups in 5 minutes.

Who did the most sit-ups per minute?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?