Answer:
Example 11 answer = 12
Step-by-step explanation:
40, 36, 32, 28
is an arithmetic sequence.
The first term (a) is 40
The common difference (d) is -4
The formula for finding the nth term ([tex]X_{n}[/tex] in an arithmetic sequence is;
[tex]X_{n}[/tex] = a + d(n - 1)
[tex]X_{8}[/tex] = 40 + -4(8 - 1)
[tex]X_{8}[/tex] = 40 - 28 = 12
