# Chapter 7 - Exponents and Exponential Functions - Cumulative Test Prep - Multiple Choice - Page 469: 12

F

#### Work Step by Step

Mitchell is 5.25 feet tall and casts a .5 foot shadow. The tree has a height of $x$ feet and casts a 2.5 foot shadow. $5.25/.5 = x/2.5$ (compares height to shadow) $10.5 = x/2.5$ $10.5*2.5 = x*2.5/2.5$ $26.25 = x$ $.25*12= 3$ inches

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