Solve for x. 5 x (−2)=−8
1 answer:
You might be interested in
Answer:
Amount invested at 8% is $9000 and amount invested at 18% is $21000.
Step-by-step explanation:
Let amount invested at 8% be x.
Let amount invested at 18% be y.
We get the 1st equation as:
........(1)
We get the second equation as:
=>
or getting rid of the decimal by multiplying by 100 on both sides.
........(2)
Multiplying (1) by 8 and subtracting from (2) we get
So, y = 21000
And
So, x = 9000
Therefore, amount invested at 8% is $9000 and amount invested at 18% is $21000.
We see that the slope of this line is so we plug this and the point
into the point-slope form
(note that there's nothing special about the point I picked; you can choose any point on the line):
This rearranges to the slope-intercept form