Carmen works part-time as a dental hygenist. Given the following information, calculate Carmen's marginal utility associated with the different income levels. 

Use the multi-point line tool along with your calculations to graph Carmen's marginal utility (MU) curve. Hint: make sure to plot a point for each income level listed in the table, with the exception of I=$0. Also, make sure to plot marginal data in between quantities. For example, the MU associated with $10,000 of income should have an horizontal axis value of 5,000.

Income Total utility (utils)

$0 800

$10,000 850

$20,000 900

$30,000 950

$40,000 1000