A biologist has been observing a tree's height. This type of tree typically grows by 0.24 feet each month. Fifteen months into the observation, the tree was 17.2 feet tall. Let x be the number of months passed since the observations started, and let y be the tree's height at that time, in feet. Use a linear equation to model the tree's height as the number of months pass. a. This line's slope-intercept equation is b. 28 months after the observations started, the tree would be feet in height. months after the observation started, the tree would be 25.84 feet tall.

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