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1-201.

Runner toward a street light 20 ft tall. Shehazana, who is 5.5 feet tall, is walking toward a 20-foot tall streetlight. Write an equation for the length of her shadow, x, in terms of the distance, d, she is from the pole. Visualize this situation using the 1-201 HW eTool (Desmos). Homework Help ✎

Do you see the similar right triangles in this diagram? Recall that similar triangles have proportional sides. Set up a proportion and solve for x.

Use the eTool below to visualize this situation.
Click the link at right for the full version of the eTool: Calc 1-201 HW eTool