The table shows the percentage P of an employee's annual salary S, in thousands of dollars, spent on the process of recruiting and training a replacement. S = annual salary (thousands of dollars) P = percentage of salary for recruiting 20 16 30 15 40 21 60 46 70 50 (a) Plot the data points. P 70 P 70 60 40 40 30 30 20 20 10 10 60 40 80 40 60 80 P 70 P 70 60 50 40 40 30 30 20 20 10 10 S 80 0 60 20 40 0 20 40 80 (b) Find the equation of the regression line. (Round regression line parameters to two decimal places.) P(S) = 20 60 50 60 50 60 20 50
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
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