Question

Please answer all of them with show work! the questions are together.

Answer 1

20: Pattern 8.
21: n * n = 64

Explanation:

8*8=64, so assuming that n is the missing variable, if we use 8 in place of n, we have 64, the "equals (=)" value will always change depending on n's value. So assuming n is equal to 8, 8*8=64