You buy a sweater for $32, which is 30% off the original price. what was the original price?
1 answer:
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Answer:
The value of y that satisfies the system of equations is 20
Step-by-step explanation:
we have
we know that
The solution of the system of equations is the intersection point both graphs
using a graphing tool
the intersection point is (-3,20)
see the attached figure
therefore
The value of y that satisfies the system of equations is 20
Answer:
Nowe we can find the means for x and y like this:
And we can find the intercept using this:
So the line would be given by:
Step-by-step explanation:
For this case we have the following data given:
Demand (x): 10,20,30,40,50,60,70,80,90,100
Price (y): 141 , 133,126, 128,113,97, 90, 82,79,53
We want to construct a linear model like this:
For this case we need to calculate the slope with the following formula:
Where:
So we can find the sums like this:
With these we can find the sums:
And the slope would be:
Nowe we can find the means for x and y like this:
And we can find the intercept using this:
So the line would be given by: