Answer:
Step-by-step explanation:
As long as you don't see the same x value giving different y values, it'll be a function.
Answer:
25.50=3.75h+0.50d
Step-by-step explanation:
Answer:
B) 5 hours
Step-by-step explanation:
First, find the amount of mph between 60 and 80:
80 - 60
= 20 mph
Since the speed increases 4 mph per hour, we can find how long it will take to get to 80 mph by dividing 20 by 4:
20/4
= 5
So, the correct answer is B, 5 hours
