Define a variable, write an inequality, and solve each problem. # 30 twice a number is more than the sum of that number and eight.

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%.

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.