Question

Write the first 5 terms of the arithmetic sequence useing the give rules

Answer 1

N= a1+ (nº 1)dWrite rule for nth term.a13= a1+ (13 º 1)dSubstitute 13 for n.30 = a1+ 1232Substitute for a13and d.12= a1Solve for a1.So, a rule for the nth term is:an= a1+ (nº 1)dWrite general rule.= 12 + (nº 1)32Substitute for a1and d.= 221+ 32