Question

7. Evaluate the following expression for n = 4.
2n? - 8

Answer 1

0
The reason is 2 times 4 equals 8 and 8-8 is 0

Answer 2

Simply replace n with 4 and do the math.

2n - 8

Let n = 4

2(4) - 8

8 - 8 = 0

Answer: 0