Find the 93rd term of the arithmetic sequence -5, -15, -25

Answer 1

note that the partial sequence -5, -15, -25 can be expressed as -5(1), -5(3), -5(5) or -5*(1,3,5) ... If the first term is let n=0, then the second term is n=1, and the third is n=2. We can then express each term of the sequence as -5(n+1). The 93rd term therefore is -5*(93+1) = -470.