X bought a cow for 42000 and was given a discount of 16 percent how much money would have been the discount had she bought the cow for 21000shillings

What is the missing constant term in the perfect square that starts with x^2 -20x

Manny bought 12 pounds of vegetables at the supermarket. 75% of the vegetables were on sale. how many pounds of vegetables were not on sale? 98 points : )

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.