I think 8.0km is the answer
From the excel plotting, we see that the least square regression equation is given by:
m=(7.25-2.65)/(2009-1978)
m=0.15
thus the equation will be:
0.15(x-0)=y-2.65
y=0.15x-2.65
b] Using the equation we can approximate the hourly wage in 2025 as follows:
x=(2025-1978)=47
y=0.15(47)-2.65
y=7.05-2.65
y=4.4
The plot is as shown in the figure:
Answer:
-1 > x and x > 7.
Step-by-step explanation:
-12 < -3x - 15 < -36
What we are looking at here is a comparison with -12 being the smallest value, -3x - 15 being the second smallest value, and 36 being the largest value in the sequence. What you need to do is to make the problem into two separate problems:
-12 < -3x - 15
and
-3x - 15 < -36
Then we solve the equations like so (using PEMDAS):
-12 < -3x - 15
+15 +15
3 < -3x
/-3 /-3
-1 > x (the sign was changed the other way because when you divide by a negative it has to be flipped)
Now the other equation
-3x - 15 < -36
+15 +15
-3x < -21
/-3 /-3
x > 7
Now we have the inequalities of -1 > x and x > 7.