exam Maths Puzzle Numerical Ability

According to the Bureau of the Census, 85.1% of adult residents of Arizona have
completed high school. What is the probability that no more than 80% of the Persons in a simple ran

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exam Other Question

I have to do a really big project and I got stuck doing this. I do not know what is means. What is an algebraic expression using equations and inequalities? Will you give me examples of each. ((7/x-1)+(6/x+2))/((9/x+1)-(8-x-1))