You subtract 3 cents and add up how many months it is tiil it reaches the same ammout as adding 5 cents and adding up six months every time
you have to add 90 +90 3 times then theres your answer :)
I think I could help you
Have fun and feel free to ask me something new.
Or we can prove some properities without calculating by details
It is nonlinear because X is being raised to the second power
Answer:
Option D. 
Step-by-step explanation:
Let
x -----> the original price of one game
y ----> the original price of one security programs
Remember that


The total pay with discount is

we have that


Find the total pay without discount

The amount saved is the difference
