Can yall help with this please?

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

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

What is the prime factorization of 23 ?me with this question