Question

The light intensity of a certain brand of light bulb is modeled by the function f(w) = 1.1w where w represents watts. Which statement BEST describes the function? A) light intensity increases exponentially B) light intensity increases linearly C) light intensity is constant D) light intensity increases

Answer 1

Answer: Light intensity increases exponentially

Explanation:

This is the exponential function formula f(x) = a^x which closely resembles

f(w) = 1.1^w. Also if you substitute values for x you'll see it increasing exponentially.

Answer 2

For this case we have the following function:

f(w) = 1.1w

The first thing we must do for this case is to define the variables.
We have then:
w: represents watts

We observe that the function varies directly, therefore, we have a linear function and the constant of variation is positive.
That is, the slope of the line is positive.
Therefore, the linear function grows.

Answer:
B) light intensity increases linearly