The nth term of a sequence is 2n - 6

a) Work out the first three terms of the sequence.

b) Work out the tenth term of the sequence.

Step-by-step explanation:

hello : let An = 2n - 6

1) the first three terms are:

the first term is : when n = 1 A1 = 2 (1) - 6 = 2-6 = - 4

the second term is : when n = 2 A2 = 2 (2) - 6 = 4-6 = - 2

the third term is : when n = 3 A3 = 2 (3) - 6 = 6-6=0

2) the tenth term is : when n = 10 A10=2 (10) - 6 = 20-6=14

Step-by-step explanation:

2n - 6

a) n = 1; 2n - 6 = 2*1 - 6 = 2 - 6 = - 4

n = 2; 2n - 6 = 2*2 - 6 = 4 - 6 = - 2

n = 3; 2n - 6 = 2*3 - 6 = 6 - 6 = 0

b) n=10; 2n - 6 = 2*10 - 6 = 20 - 6 = 14