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Solve for x and check.
4. Solve the following system of equations by
and check your answer
5. Linda drives from Ukiah to the East Bay. She averages 60mi/hr on the freeway, but when she gets to the East Bay, the freeway is clogged with rush hour traffic. Fortunately, she knows the East Bay, and knows how to get to her destination on surface streets. Unfortunately, she can only average 30mi/hr on the surface streets. The trip was 150 miles long and it took her 3 hours. How long was she on the freeway and how long was she on the surface streets. How far did she drive on the freeway and how far did she drive on the surface streets?