6.25 The personnel department of a company has records which show the following analysis of its 200 engineers Age (Years) Bachelor's Master's Total Degree only Degree Under 30 90 10 100 30 to 40 20 30 50 Over 40 40 10 50 150 50 200 If one engineer is selected at random from the company, find (a) the probability that he has only a bachelor's degree. (b) the probability that he has a master's degree given that he is over 40. (c) the probability that he is under 30 given that he has only a bachelor's degree. 8883

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.