Vocabulary
A mathematical phrase that can contain numbers, variables, and operators.
Expression
2x = 6
x = 3
14 + 9m = -13
m = -3
5.6x – 10 < 18
x < 5
Coefficient
5x = 30
x = 6
18 = 5m + 3
m= 3
Phil needs to run at least 30 miles this week for his training. If he has already run 18 miles this week, then how many miles should he run on each of the 3 remaining days this week?
18 + 3x >= 30
x>= 4
A number that doesn't change
Constant
12m = 144
m = 12
7m -17 = 60
m = 11
Luke has $9.00 to spend at the concession stand. He buys a hot dog for $1.50, and he wants to purchase some Sour Straws for $0.75 each. How many Sour Straws can Luke purchase with the money that he has?
18 + 3x ≤ 30
x ≤ 4
A constant or a variable in an expression
Term
(4/3) y = 16
y = 12
( c / -9) + 6 = 14
c = -72
-2x + 3.5 ≥ 7.5
x ≤ -2
A mathematical statement composed of algebraic and/or numeric expressions set equal to each other
Equation
( w/ -2.5) = 8
w = -20
( 1/5 )x - 2 = 4
x = 30
Ralph won’t sell the Christmas trees on his farm until they are a minimum of 70 inches tall. The trees he has now are an average of 12 inches tall, and the trees grow about half an inch every month. How many months will it be until Ralph will sell his trees?
12 +1/2 x ≥ 70
x ≥ 116