4.)
A.)
P = 140
i = 0.05
B.)
140(1.05)^t
C.)
0 = 140
10 = 228.05
5.)
A.) The y-intercept is how much the cell phone cost to purchase.
B.) V means value, t meaning years was replaced by 4, and 31.25 is how much it's worth at that time.
C.) The graph is decreasing, and the value goes down with time.

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HERE'S A EXPLANATION!


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<u>ANSWER!</u>
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Hopefully, this helps you!!

Subtract any number from the next one.
-1 - (-6)
4 - (-1)
9 - 4
14 - 9
All of the above subtractions give the same answer.
That answer is the common difference.