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Which statement describes a situation that can be represented by an exponential function?
A)The value of a stock decreases by 5% every month.
B)customer pays a restaurant bill of $18 and leaves a 20% tip.
C)A canoe rental company charges an initial fee of $12 and an hourly rate of $8.
D)The area of a square increases by 400% when the length of each side of the square increases fro
nits.

Respuesta :

Answer: c

Step-by-step explanation:

Using the concept of exponential function, it is found that the correct option is given by:

A)The value of a stock decreases by 5% every month.

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  • In an exponential function, the rate of change is always a percent of the measure, not fixed, having the model given below, in which the input is the exponent and r is the decay rate, as a decimal:

[tex]y(t) = a(1 - r)^t[/tex]

  • To be a function, it also has to be valid for a domain of the input, not only an one-off occurrence, such as in options B and D.
  • In option C, the rate of change is fixed, of $8, thus, it is linear.
  • Thus, the option that represents an exponential function is:

A)The value of a stock decreases by 5% every month.

A similar problem involving exponential functions is given at https://brainly.com/question/16937069

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