Question

find the first 4 terms of the geometric sequence a1=40 and r=0.5

Answer 1

nth_term = a1*r^(term_wanted -1)

plug in your numbers

Answer 2

so a1*40?

Answer 3

1st 40
2nd 40*.5*^1 = 20
3rd 40*.5^2= evaluate

Answer 4

40, 20, 10, 5

Answer 5

1st is 40 cuzz

nth_term = a1*r^(term_wanted -1)
40*.5^( (1)-1 )
40*.5^0
40*1=40

:note: anynumber^0=1