Equation

How many real roots have equation
x3=x
?

Correct answer:

n =  3

Step-by-step explanation:

x3=x x3x=0 x(x21)=0 x(x1)(x+1)=0  x1=0 x2=1 x3=1  n=3



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Math student
The annual salary of an entry level statistics major (in thousands of dollars) is normally distributed with mean of 75 and standard deviation of 12 X ∼ N ( μ = 75 , σ = 12 ). What is the minimum salary a statistics major should aim for in order to earn amongst the top 10%?

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