A child sells lemonade. She must pay for the ingredients but then earns an income on each glass she sells. The following table shows her net income I, in dollars, from selling g glasses of lemonade. Round your answers to two decimal places, if necessary.
g 4 6 8 10 I 1.65 5.19 8.73 12.27?
A: Complete a table of changes to show that the data are linear.B: Find a linear model for the data.C: How much did she pay for ingredients?D: Plot the data along with the linear model you found in part B.
What will be an ideal response?
A
| Change in g | From 4 to 6 | From 6 to 8 | From 8 to 10 |
| Change in I | 3.54 | 3.54 | 3.54 |
?
B: 
C: Ingredients cost $5.43.
D: The horizontal span is 0 to 11, and the vertical span is 0 to 15.
Mathematics
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