Answer:
d would be the answer
Step-by-step explanation:
i took the test
The domain is the range of the x-axis. In this situation the x range from 0 to 11, so the domain is D.
The pattern is that every 2 numbers are a pair, the first being any selected number, and the second number next to is the number times 3.
3 x 3 = 9
4 x 3 =12
7 x 3 = 21
Therefor we type 16 x 3 = 48
48 is your next number.
It will take you double the time, or 78 seconds.