The average annual income for five salespeople last year was $35,516. Four of the salespeople earned these annual amounts: $36,230, $34,500, $38,250, and $33,000. What was the annual income of the fifth salesperson?

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

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Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12