Dana enjoys taking her dog for a walk, but sometimes her dog gets away and she has to run after him. dana walked her dog
for 7 miles but then had to run for 1 mile, spending a total time of 2.5 hours with her dog. her running speed was 3 mph
faster than her walking speed. find her walking speed.
the answer is b.)
< 1=< 2
i can't solve unless i know what the line is
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