The rule for being the nth item in a certain sequence is n(n+1)/2. what is the 4th term in this sequence ? a.) 4
b.)10
c.)16
d.)20​

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

Louis wants to give \$15 to kids who need school supplies. he also wants to buy a pair of shoes for \$39. how much money will he have to save for both?

What is the correct answer? urgent you