Someone help me, I've been trying to do this for like 10 minutes-

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts

An arithmetic series a consists of consecutive integers that are multiples of 4 what is the sum of the first 9 terms of this sequence if the first term is 0