Which of the following tables represents a function? (PLEASE HELP!) x 3 3 4 4
y 2 −2 3 −3

x 5 −5 5 −5
y 2 2 8 8

x 3 3 5 5
y 4 5 6 7

x 4 −4 5 −5
y 2 2 3 3

Renee hiked for 6 3 /4 miles. after resting, renee hiked back along the same route for 5 1 /4 miles. how many more miles does renee need to hike to return to the place where she started? represent your answer as a simplified mixed number, if necessary.