I'm guessing it is 18. 18 decreased by nine equals nine so to me it makes sense.
Answer:
Via its graph, you can identify exponential and linear functions. Linear functions are straight lines, while curved lines are exponential functions. By the adjustment in y, you can also recognize them. If you apply the same number to y, then the function changes continuously and is linear.
Step-by-step explanation:
Answer:
B
Step-by-step explanation: