Definitions
An is a combination of numbers, variables, and operation symbols that represent a value or a mathematical phrase, it does not have an equal sign.
EXPRESSION
What algebraic expression models the word phrase seven fewer than a number t?
t-7
Simplify by combining like terms.
-(3x-4y)+x
4y-2x
An expression that is a number, a variable, or the product of a number and one or more variables is a ?
TERM
What algebraic expression models the word phrase two times the sum of a and b?
2(a+b)
4a + 7b + 3a - 2b + 2a a=-5 and b= 3
-30
A is the numerical factor of a term.
COEFFICIENT
In the last baseball game, there were two 3-run home runs and 4 hits that each scored 2 runs.
2x3+4x2
7(a+4)+3b-8 if a=-4 b=5
7
A is a term with no variable.
CONSTANT TERM
Your little sister has made up a card game where different types of cards are worth different points. Face cards (F) are worth 12 points, cards with red numbers (R) are worth 5 points, and cards with black numbers (B) are worth 9 points. Which models the total number of points that you have in your hand? Suppose you have 3 face cards, 6 cards with red numbers, and 8 cards with black numbers. How many points do you have?
A. 12F + 5R + 9B; 138 B. 3F + 6R + 8B; 153
C. 12F + 5R + 9B; 153 D. 3F + 6R + 8B; 138
A. 12F + 5R + 9B; 138
2(x2-x)-3(x2-x)+x2 for x=3
3