HELP ME PLEASE!!! WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER!!! picture below
The graph of f(t) = 4 • 2t shows the value of a rare coin in year t. What is the meaning of the y-intercept?
A. Every year the coin is worth 4 more dollars.
B. When it was purchased (year 0), the coin was worth $4.
C. In year 1, the coin was worth $8.
D. When it was purchased (year 0), the coin was worth $2.

Question

lustlarrywrites lustlarrywrites

13-10-2018
Mathematics

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HELP ME PLEASE!!! WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER!!! picture below
The graph of f(t) = 4 • 2t shows the value of a rare coin in year t. What is the meaning of the y-intercept?
A. Every year the coin is worth 4 more dollars.
B. When it was purchased (year 0), the coin was worth $4.
C. In year 1, the coin was worth $8.
D. When it was purchased (year 0), the coin was worth $2.

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hanafubuki hanafubuki · Answer 1 · 2018-10-13T22:04:15+02:00

hanafubuki hanafubuki

13-10-2018

B since it is on the x-intercept at 0 then is shown on the y-intercelt at 4.The answer has both of these numbers.

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altavistard altavistard · Answer 2 · 2018-10-13T22:52:30+02:00

Answer:

4 units

Step-by-step explanation:

First of all, notice that the graph is NOT a straight line. That means we should have written f(t) = 4*2^t instead of f(t) = 4*2t.

In words: the value of this coin is 4 units at time t=0 and grows exponentially with time.

This is an exponential function. The y-intercept is obtained by letting t = 0 and evaluating f(0) = 4*2^0. This is equal to 4*1, or just 4. Once again, the y-intercept represents the initial value of the coin.