Answer:
84
Step-by-step explanation:
f(1)=4^1 - 1 = 3
f(4) = 4^4 - 1 = 255
rate of change = 
(255 - 3) / (4 - 1) = 252 / 3 = 84
Answer:
x = 140
Step-by-step explanation:
180 - 65 - 75= 40
180 - 40 = x
140 = x
The original price would be $72. Hope this is right, and helps you.
Answer:
Each notepad would cost $5.
Answer:
The awnser is eleven hope this helps a bit