Answer:
22
Step-by-step explanation:
In this sequence, the next number is found by adding 4.
Answer:
47.
Step-by-step explanation:
1) the rule:

where a;b are 0 and 12, f(x)=x²-1.
2) according to the rule above:

Put a point at -9 because that is the y-intercept.then from the point -9 count up 5 and count over 3.