To compare the amount of time spent on recent service calls with the total amount charged for labor and parts, a repairman uses a scatter plot. He draws a line with the equation \( y=47.5 x+250 \) to model the data, where \( x \) is the time in hours spent on a call, and \( y \) is the total amount charged in dollars. 14 Fill in the Blank 1 point How much does the repairman usually charge for a 2 -hour call? 1 2 Previous
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To find out how much the repairman usually charges for a 2-hour call, you can substitute \( x = 2 \) into the equation \( y = 47.5x + 250 \). So, \[ y = 47.5(2) + 250 = 95 + 250 = 345 \] The repairman usually charges $345 for a 2-hour call. Now let's dive into the world of scatter plots! These nifty visual tools not only help in identifying trends but also in predicting future data points. Imagine using one to track how customer satisfaction improves with faster service times – you could easily see the sweet spot where efficiency really pays off! On another note, if you're diving into the details of modeling data, don't forget to watch out for outliers! A few extreme values can skew your results and make your line of best fit misleading. Always scan your scatter plot carefully before making decisions based on the trend!