A cyclist leaves their home for a 3 3 -hour ride to a park on a Saturday morning at 8 8 A.M. The park is 9 9 miles away from their home. On a Monday morning, they cycle back home from the park, starting at 8 8 A.M. and taking the same 3 3 hours. Let p ( t ) p(t) be the cyclist's distance from home t t hours after 8 8 A.M. on Saturday, and q ( t ) q(t) be the distance from home t t hours after 8 8 A.M. on Monday. If r ( t ) = p ( t ) − q ( t ) r(t) = p(t) - q(t) , what are r ( 0 ) r(0) and r ( 3 ) r(3) ?

r ( 0 ) = − 9 , r ( 3 ) = 9 r\left(0\right)=-9,r\left(3\right)=9

r ( 0 ) = 9 , r ( 3 ) = 0 r(0)=9\text{, }r(3)=0

r ( 0 ) = 0 , r ( 3 ) = 9 r(0)=0\text{, }r(3)=9

r ( 0 ) = − 9 , r ( 3 ) = − 9 r(0)=-9\text{, }r(3)=-9

A cyclist leaves their home for a 33-hour ride to ...

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