Note as a fact:
H⁻¹(H(x)) = x
Option C.
I’m assuming that -0.7 was multiplied with -1/2
The next number is 27.
You can find this by finding the common ratio between 3 and 9 and multiplying 9 by the common ratio. The common ratio is 3
Answer: y = 6x + 400
slope = the increase in cost per extra plate
y-intercept = total cost