Answer:number 2
Step-by-step explanation:
Tried my best, hope its right!
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
Answer:
option-B
Step-by-step explanation:
We are given function as

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

now, we can factor it


we get


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





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