Math Problem Statement

Alexandra left her house at time zero and drove to the store, which is 9 blocks away, at a speed of 3 blocks per minute. Then she stopped and went into the store for 5 minutes. From there, she drove in the same direction at a speed of 5 blocks per minute until she got to the bank, which is 15 blocks away from the store. She stopped at the bank for 6 minutes. Then she drove home at a speed of 6 blocks every minute. Make a graph of showing the number of blocks away from home that Alexandra is xxminutes after she leaves her house, until she gets back home.

Solution

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Piecewise Functions
Distance-Time Graphs

Formulas

Distance = Speed × Time
Slope = Change in Distance / Change in Time

Theorems

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Suitable Grade Level

Grades 9-11