a merchant gains 15% by selling an article for $ 150. by how much does he sell it to double his profit ?​

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Which expression gives you the distance between the points (5,1)and(9,-6)

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank