Question

Mary and Julie both have a goal of raising $1000 for charity. Mary raises $12 every 4 days. Julie raises $19 every 6 days.

answer: Mary would have a rise of 12 and a run of 4, making her slope, or rate of change, $3 a day. Julie would have a rise of 19 and a slope of 6, making her slope, or rate of change, $3.17 a day. Since Julie is raising money at a faster rate, she would get to the goal of $1000 first.

Answer 1

Julie will because if you divide 19 and 6 you get 3.16666666666 etc and when you divide 12 by 4 you get 3 so that means that Julie will get $1000 before Mary does.                 Not the best wording but it worked for me ;)

Answer 2

Answer:

Mary would have a rise of 12 and a run of 4, making her slope, or rate of change, $3 a day.

Julie would have a rise of 19 and a slope of 6, making her slope, or rate of change, $3.17 a day.

Since Julie is raising money at a faster rate, she would get to the goal of $1000 first.

Step-by-step explanation:

Mary is raising $12 every 4day and Julie is raising $19 every 6 days.The money raised by Mary and Julie if plotted on a graph will be a linear equation.

The rise is the change in y coordinate and run is change is x coordinate .For Mary Rise is $12 and run is 4 So slope = Rise ÷Run = 12÷4= 3.

For Julie the rise is $19 and run is $19 .Slope = Rise ÷Run =19÷6=3.166=3.17

As rate of change for Julie is more so  Julie will get the goal of raising $1000 first.