Astock lost 8 1/4 points on monday and then another 2 3/4 points on tuesday. on wednesday, it gained 12 points. what was the net gain or loss of the stock for these three days

If g(x) is an odd function, which function must be an even function?

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?