Answer: B. x < 1 or a > 2.
First, let's solve the first inequality, 2x + 8 < 10:
Subtract 8 from both sides:
2x + 8 - 8 < 10 - 8
2x < 2
Divide both sides by 2:
(2x)/2 < 2/2
x < 1
Now, let's solve the second inequality, 2x + 8 > 20:
Subtract 8 from both sides:
2x + 8 - 8 > 20 - 8
2x > 12
Divide both sides by 2:
(2x)/2 > 12/2
x > 6