Parents and teachers at a local middle school organized three big PTA meetings last year. The percent of each class that was represented by a parent, a famity member, or a legal guaraian at each meeting and the total attendance is shown in the table. 6Th Grade 7 Grade 8h Grade Total Welcome Meeting 90% 50% 30% 538 Holidays Meeting 60% 60% 40% 488 Spring Meeting 50% 80% 60% 563 Define tne variables ana write a system of equations to represent the situation.
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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