The required block diagram that shows how much distance Scarlett is away from the home is shown in the image attached.
As given in the question Scarlett left her house at time zero and drove to the store, which is 3 blocks away, at a speed of 1 block per minute.
Then she stopped and went into the store for 4 minutes.
she drove in the identical at a rate of 5 blocks per minute until she got to the bank, which is 15 blocks away from the store.
Here,
1 Approach, Scarlett moves with the speed of a block per minute
Total distance travel = 3 block
Approach 2 Scarlett moves with the speed of 5 blocks per minute for 3 minutes
Total distance travel = 15 block
Approach 3 Scarlett moves with the speed of 3 blocks per minute for 1 minute
Total block traveled = 3 + 15 = 18
Now, Approach 3 is to retrace the path at the rate of 3 blocks per minute,
All these calculations is been shown in the block diagram.
Thus, the required block diagram that shows how much distance Scarlett is away from the home is shown in the image attached.
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