Question

What are the first three terms of the Arithmetic Sequence an = 15 – 2(n – 1)?

a 15, 17, 19
b 13, 11, 9
c 15, 13, 11
d 13, 26, 39

Answer 1

to find the first term replace n by 1 in your formula
15 - 2(n - 1)

Answer 2

this form ula gives you the nth term in the sequeance
an stands for nth term

Answer 3

so the formula would be 15 - 2(1 - 1)

Answer 4

so when n = 1

a1 = 15 - 2(1-1)

Answer 5

yes - thats the first term

Answer 6

simplify that and you have the first term

Answer 7

okay . thanks i got it from here i think .

Answer 8

great