The answer is -3x^2+10xy+8y^2
Answer:
the answer is easy.
Step-by-step explanation:
Answer: choice D) 20
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Explanation:
Locate 3 on the x axis number line. Draw a vertical line through 3 and this vertical line will cross the parabola at some point P. Mark this point P on the parabola. Then draw a horizontal line from P to the y axis. The horizontal line will land on y = 10. In short, this all shows us that (3,10) is a point on this parabola.
Repeat those steps above, but now for x = 7. You'll see that (7,90) is another point on this parabola.
We need to find the slope of the line through the two points (3,10) and (7,90). The average rate of change from x = 3 to x = 7 is the same as the slope of the line through those two points.
To find the slope, we use the slope formula
m = (y2 - y1)/(x2 - x1)
where (x1,y1) and (x2,y2) are the two points, and m is the slope
In this case,
(x1,y1) = (3,10) and (x2,y2) = (7,90)
further breaking down to
x1=3
y1=10
x2=7
y2=90
So we'll plug those four pieces of info into the equation and simplifying to get...
m = (y2 - y1)/(x2 - x1)
m = (90 - 10)/(7 - 3)
m = 80/4
m = 20
The slope of the line is 20, so therefore, the average rate of change is 20.
Answer:
Step-by-step explanation:
Annual gross salary = $28000
Income tax = 20% on anything above $15000
So she's taxable for $5000
Rent loan = $140 per month = $140 * 12= $1680 per annum
Tax deductible per annum = 20% of $5000
20 / 100 * $5000 = $1000
Total amount she takes home per annum =
Gross salary per annum - tax - loan =
($28000 - $1000 - $1680) = $25,320
Ayesha takes home $25,320 home annually.
Answer:
well um I have to go with 0
