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September 2, 2015

Homework Help: 7th grade math

Posted by Lauren on Tuesday, September 11, 2012 at 5:05pm.

Each of the first 4 pit stops a racecar driver makes loses ten seconds off the leader. The pit crew makes adjustments, and at each of the next two pit stops he gains 7 seconds on the leader. How much time is the driver off the leader?

a. 40 seconds
b. 14 seconds
c. -26 seconds
d. -54 seconds

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