Ineed some with the part circled in red, . john is riding a bike along a straight path.

100/3 meters per min

Step-by-step explanation:

Im kinda unsure about this one.

It took 3 minutes for John to travel 200m and Sam to travel 300m.

You have time and distance so you can use that to find velocity.

John: 200/3 m/min

Sam: 300/3 m/min

take the difference between the two to get your answer.

|200/3 - 300/3| =  100/3 m/min

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.

goog may have it for you