Jordan buys a big drum. the diameter of a drum circle is 12 feet. what is the area of the drum?

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%.

Pls the last one and it has to be like number 6

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.