(6*1015)*(7*1016)
=6090*7112
=43312080
0 or 1 or more than one for zero functions
Their distance differs by 15 miles for each hour of travel time. Thus, the travel time of interest is
.. (180 -144) miles/(15 miles/hour) = 2.4 hour
The red car's speed is 180 mi/(2.4 h) = 75 mi/h.
The blue car's speed is 144 mi/(2.4 h) = 60 mi/h.
<span> (4.08)(0.7) = 2.856
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