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

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