At a fundraiser,800 tickets are sold at $10 each for four prizes: a new car worth $30,000, a European vacation worth $9,000, a home theater system worth $4,000, and a cash prize of $1,000. You buy 1 ticket. What is the expected value of your gain. EXPERT VERIFIED ONLY.

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%.

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.