Clara uses the function f(x) = 20x + 10 to determine the weekly profit she makes, in dollars, for babysitting, where x is the number of hours that she works.

At f(3), Clara makes ____ dollars, and at f(5), Clara makes ____ dollars.
Clara charges ______ dollars per hour to babysit.
Enter the words "more", "less", or "the same amount of" to complete the statement below, and interpret the information about the function.
Clara makes _______ money working 5 hours compared to working 3 hours.

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Answer:

At f(3), Clara makes _70_ dollars, and at f(5), Clara makes _110_ dollars.

Clara charges _x_ dollars per hour to babysit.

Enter the words "more", "less", or "the same amount of" to complete the statement below, and interpret the information about the function.

Clara makes _more_ money working 5 hours compared to working 3 hours.

Step-by-step explanation:

The profit that Clara makes babysitting is given by the linear function f(x) = 20x + 10.

First, substitute 3 for x in the function to evaluate f(3), as shown below.

Next, substitute 5 for x in the function to evaluate f(5), as shown below.

Therefore, Clara makes 70 dollars at f(3) and 110 dollars at f(5). Consequently, since x represents the number of hours that she works, Clara makes more money working 5 hours compared to working 3 hours.

Since the profit function is linear and in slope-intercept form, the amount that Clara chargers per hour to babysit is the slope of the line, or 20 dollars per hour.