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weeeeeb [17]
3 years ago
6

Use the following graph of the function f(x) = x3 − 3x2 − x + 3 to answer this question: graph of x cubed minus 3 x squared minu

s x plus 3 What is the average rate of change from x = −1 to x = 2?
Mathematics
1 answer:
Marina CMI [18]3 years ago
6 0

The average rate of change is also known as the slope. If we are looking to find the average rate of change between x = -1 and x = 2, in order to find the slope between those 2 x values, we need the y's that go along with them. Fill in -1 for x in the function and solve for y: (-1)^3-3(-1)^2-(-1)+3=0. That means that the coordinate is (-1, 0). Fill in 2 for x in the function and solve for y: (2)^3-3(2)^2-(2)+3=-3. The coordinate there is (2, -3). Now we can set up the slope formula to find the average rate of change between those 2 points: \frac{-3-0}{2-(-1)}=\frac{-3}{3}=-1. Therefore, the average rate of change between x = -1 and x = 2 is -1

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We can solve this problem by the rule of three.
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18 boys--------------  x


x=(18 boys * 100%) / 45 boys=40 %


Answer: 40% of the boys play de drums.



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