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Test Prep Videos 986 videos

CAHSEE Math 5.3 Algebra and Functions
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CAHSEE Math: Algebra and Functions Drill 5, Problem 3. Solve the equation.

ACT Math 3.1 Plane Geometry
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ACT Math: Plane Geometry Drill 3, Problem 1. What is the area of the trapezoid shape in the video?

AP Statistics 2.1 Exploring Data
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AP Statistics 2.1 Exploring Data. How does this change affect the mean, standard deviation, and IQR?

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SAT Math: Making Predictions Using the Slope of a "Best Fit" Line 7 Views


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The scatterplot above shows data indicating the annual profit from computer sales by a technology company in a given year. Researchers use a line of best fit to estimate the annual profit for years not shown in the graph above. Which of the following would these researchers estimate was the annual profit from computer sales for the year 2011?

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