Answer:
y = 30x + 75
Step-by-step explanation:
every month you're paying 30 dollars for a fee.
the 75 dollars is simply the "down payment" so to say.
m is the constant growth or the continuous growth or the charge per month.
Answer:
3.50$ x 5.5 = 19.25 $
Step-by-step explanation:
To shift vertically the graph of the function 
, you have to add a constant to its expression:
If k is positive, you shift the function k units above, if k in negative, you shift the function k units below.
So, if you want to shift the graph of 
two units down, you have to subtract 2 (i.e., add -2):
