Problem 1:
this graph shows the amount of water melanie can pump over a given period of time
this equation shows the amount of water lori can pump in a given period of time:
w = 4h
who pumps water at the faster rate, melanie or lori?
this graph shows the number of emails yolanda writes in a day:
problem 2:
this graph shows the number of emails yolanda writes in a day:
this equation shows the number of emails that zoe writes in a day:
h = 2e
who has the higher rate of email production, yolanda or zoe?
how do you know this to be true?