Mathematics
Grade10
Easy

Question

Sue charges $ 15 for the first hour of babysitting and $ 10 for each additional hour, with the fraction of an hour counting as a whole hour. The rates that Vic charges for x hours of babysitting are modeled by the function shown
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Select the statements that are correct.
Statement 1: Sue charges more than Vic.
Statement 2: Vic charges more than Sue.
Statement 3: Sue and Vic charge equally.

  1. Only statement 1
  2. Only statement 2 
  3. Only statement 3 
  4. Both statements 1 & 3 

hintHint:

We take an example of hours and calculate the total rate for Sue and Vic both. Then, we conclude with the given option.

The correct answer is: Only statement 1


    Step 1 of 1:
    Let us take x = 10
    Sue: f(x) = 15 + 10×10 = $115
    Vic: f(x) = 9.5x = 9.5×10 = $95
    Sue charges more for 10 hours of babysitting.
    Final Answer:
    The right choice is- a. Only statement 1

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