Evaluating Expressions (WHole Numbers)
Evaluate 4x + 1 when x = 38 .
153
Evaluate 48x-30 when x=2/3
2
Simplify 2x+5+4x+3
6x+8
Solve for x.
x+3 = 17
x=14
What do we call a letter that stands for a value that can change?
Variable
Evaluate 2x^2 when x=15
225
Evaluate 21x+50 when x=2/5
48 1/5
Simplify -2c+11+5c-3
3c+8
Solve for x.
2x-1=15
x=8
What do we call a group of two or more numbers or letters separated by math operation signs?
Expression
Evaluate 3x-14+4x when x=21
133
Evaluate 3/5x-2/15 when x=4/15
2/75
Simplify 2/5 x-12+1/3x-5
11/15x-17
Solve for x.
75-3x=45
x=10
What do we call it when we have 2 expressions that are set as equal to each other?
Equation
Evaluate x^3 when x=(-5)
-125
Evaluate 12/(4x) when x=-1/10
-30
Simplify 4x-7x+32+8x-14
5x+18
Solve for x.
2x^2=128
x=8
What do we call a number on it's own?
Constant
Evaluate 4x^2+3x+1 when x=3
46
Evaluate (3x-4)/(-2x) when x=(-2)
-2 1/2
Simplifyn 5x+8-3x+x^2-1
x^2+2x+7
Solve for x.
7x-32=73
x=15
What do we call the number that is used to multiply a variable, like in the example, 3x?
Coefficient