Fractions and mixed numbers here is a picture of the problem please help me solve it thank you

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

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

How do i simply this radical expression?