Adog is running at a speed of 100 feet in 30 seconds. how fast is this in miles per hour?

The answer to the problem would be 0.038 miles per hour

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step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.