Question

The sequence {
`a_(n)`} is defined by
`a_(1)` = 5 and
`a_(n+1) = a_(n) +7 for n=1,2,3,..` what is the value of
`a_(5)`

Answer 1

a1=5
a2=a1+7=5+7=12
a3=a2+7=12+7=19
a4=a3+7=19+7=26
a5=a4+7=26+7=33

or a5=a1+4*7=5+28=33