Question 1
A researcher records the number of hours 10 students studied and their test scores. The scatterplot shows that as hours increase, scores tend to increase. Which term best describes this relationship?
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Answer question 1 to unlock
The line of best fit for a data set is \(y = 2x + 10\), where \(x\) is the number of weeks and \(y\) is the total number of books read. According to the model, how many books will have been read after 15 weeks?
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Answer question 2 to unlock
The equation \(y = 3x + 20\) models the total cost \(y\), in dollars, of ordering \(x\) custom T-shirts from a printing company. What does the slope of 3 represent in this context?
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Answer question 3 to unlock
A school surveyed 100 students about their favorite sport. The results are shown below.
\[\begin{array}{|c|c|c|c|} \hline & \textbf{Basketball} & \textbf{Soccer} & \textbf{Total} \\ \hline \textbf{Boys} & 30 & 20 & 50 \\ \textbf{Girls} & 15 & 35 & 50 \\ \hline \textbf{Total} & 45 & 55 & 100 \\ \hline \end{array}\]
What fraction of all students surveyed prefer soccer?
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Answer question 4 to unlock
A mechanic uses the equation \(y = 5x + 25\) to estimate the total repair cost \(y\), in dollars, for a job that takes \(x\) hours of labor. What does the number 25 represent in this context?
correct answers
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