Answer:
Estimated is close but not completely correct, and true value has the highest accuracy.
Step-by-step explanation:
Hopefully that helped! :)
He did not distribute correctly in the first step.
4(x+2)=30
4x + 8=30
He should have distributed the 4 to the 2 as well.
First, find out how many messages are received a second. Do this by dividing messages by 60 seconds.
120/60 = 2 messages a second
now multiply 2 by 150
2*150 = 300messages in 150 seconds
your answer is (3) 300
So,
Let's manipulate this into the y=mx + b form.
Add 4x to both sides
-6y = 4x + 24
Divide both sides by -6

Just use the slope to find the points you need.
The y-intercept is
(0,-4).The slope is

. Finding the next point:
(-6,0)You could have also used the <em>slope intercept method.</em>
-4(0) - 6y = 24
-6y = 24
Divide both sides by -6
y = -4
(0,-4)-4x - 6(0) = 24
-4x = 24
Divide both sides by -4
x = -6
(-6,0)