Bob needs one hour to rake the leaves. It takes George 1/2 an hour to the same job. How long will it take them to rake the leaves together
based on the same rates?

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%.

What is the prime factorization of 230

Precalculus question, image attached.