Question

exponential growth functions
determining the appearance of a graph
leticia invests $200 at 5% interest. if y represents the amount of money after x time periods, which describes the graph of the exponential function relating time and money?
the initial value of the graph is 500. the graph increases by a factor of 1.02 per 1 unit increase in time.
the initial value of the graph is 200. the graph increases by a factor of 5 per 1 unit increase in time.
the initial value of the graph is 500. the graph increases by a factor of 2 per 1 unit increase in time.
the initial value of the graph is 200. the graph increases by a factor of 1.05 per 1 unit increase in time.

Explanation:

Step1: Identify initial value

The initial investment is $\$200$, so the initial value of the graph is 200.

Step2: Calculate growth factor

The interest rate is 5%, so the growth factor is $1 + 0.05 = 1.05$. This means the graph increases by a factor of 1.05 per 1 unit increase in time.

Answer:

The initial value of the graph is 200. The graph increases by a factor of 1.05 per 1 unit increase in time.