The margin of error of a 98% confidence interval is given by
Answer:
$176.30
Step-by-step explanation:
7 1/2% can be simplified to 7.5%
7.5% of 164.00 is 12.30
12.30+164.00=176.30
$176.30
0.25 is a reduction
Scale factor < 1 is a reduction.
Scale factor > 1 is an enlargement.
Hope that helps!
In the form y = mx + c
First thing's first, we can determine the gradient, m, simply by looking at the points.
The gradient is determined by how much the value of y increments (or decrements) for each increase of 1 on the x axis.
Every time x increases by 1, y decreases by 4, meaning our gradient is -4.
We are also able to determine our constant, c, by seeing where our line will cross the y axis. In this case, there is a point dead-on the y axis at (0, -2), meaning our constant is -2.
With this information, we can put together the linear equation, y = -4x -2.
Convert the first to an equation:
6(x+15)=-42
6x+90=-42
6x=132
x=22
Same for second equation:
4(x-7)=12
4x-28=12
4x=40
x=10
The solutions are x=22 and x=10
I hope I helped you with your solution! If you could give me brainliest, I would be very thankful!