Fourteen of the 100 digital video recorders (dvrs) in an inventory are known to be defective. what is the probability you randomly select an item that is not defective?

Rewrite the following without an exponent. (5/8)-1

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?