Two equations that would have a solution of (3,5)

The average human heart beats 72 beats per minute. how many times does it beat in 15 seconds?

Karianne and lucius are analyzing a linear function on a graph. karianne says that unit rate is equal to rate of change, but that slope is calculated differently. lucius says that unit rate, rate of change, and slope are calculated the same way. who is correct? explain your answer.

Describe a situation that you could represent with the inequality x< 17