Question

What are the first four terms of the sequence given by the formula below an=-2n+4

Answer 1

The answer is:

2, 0, -2, -4

Answer 2

an = -2n + 4 ; where n is the sequence number or order.

a1 = -2(1) + 4
a1 = -2 + 4
a1 = 2

a2 = -2(2) + 4
a2 = -4 + 4
a2 = 0

a3 = -2(3) + 4
a3 = -6 + 4
a3 = -2

a4 = -2(4) + 4
a4 = -8 + 4
a4 = -4

So the first four terms of the sequence are: 2, 0, -2, -4