Answer:
C.
Step-by-step explanation:
For #16, every input by +1 has an output of +7.
9 + 7 = 16
16 + 7 = 23
23 + 7 = 30.....
Answer:
6
Step-by-step explanation:
2x + 7 = 19
-7 -7
2x = 12
12/2 = x
6 = x
Answer:
You can buy 3 books 4 x 3 = 12
Step-by-step explanation: