Question

The exponential function in the graph shows the value, in dollars, of an investment over time. What real-world information is given by each feature of the graph? Select from the following options: 1. The value after 7.5 years. 2 The amount of time it takes for the value to decrease by one half.3. The value after one year. 4. The starting value.

Answer 1

We have the graph of the evolution in the value of an investment in time.

The y-intercept, y=10, correspond to the value of y for t=0. This corresponds to the starting value of the investment.

The point (1, 7.5) tells us that the investment value is 7.5 after one year. This point gives us the value after one year.

Answer:

y-intercept: The starting value.

Point (1,7.5): The value after one year.