To calculate it, first order your data points from least to greatest, then determine your first and third quartile positions by using the formulas (N+1)/4 and 3*(N+1)/4 respectively, where N is the number of points in the data set.

after you do that then say IQ=Q3-Q1

6 0

3 years ago

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Which statement best describes the graph of f(x)=-x^4+3x^3+10x^2

ale4655 [162]

Answer:

option-B

Step-by-step explanation:

We are given function as

$f(x)=-x^4+3x^3+10x^2$

we know that

Any function touches or crosses x-axis when y-value is 0

so, we can set f(x)=0

and then we can solve for x

$f(x)=-x^4+3x^3+10x^2=0$

now, we can factor it

$-x^2(x^2-3x-10)=0$

$-x^2(x-5)(x+2)=0$

we get

$-x^2=0$

$x=0$

It means that function touches x-axis at x=0

$(x-5)(x+2)=0$

$(x-5)=0$

$x=5$

$(x+2)=0$

$x=-2$

So, function crosses x-axis at x=5 and x=-2

so,

option-B

6 0

3 years ago

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Your current account balance is $215. You have $322 of expenses each month. Your income is $444 per month. How long will it take

earnstyle [38]

Let y be the balance in your account. Let x be the number of months.

y = 215 + (444-322)x = 215 + 122x

1000 = 215 + 122x
785 = 122x
x = 6.43 months

5 0

4 years ago

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