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What is a variable?
A variable is a symbol that represents a mathematical object.
Solve the equation 2x + 3 if x equals 4.
11
Solve the equation 3y-5 if y equals 3.
4
Solve the equation 5/t - 5 if t equals 25
20
Solve 27-m=13
14
Solve the equation 4 x w=52
13
5 + f + 9 =16
2
25=b/4
100
Mark needs to travel 42km. He can ride his bike 7km each day. Write the algebraic expression to represent this problem.
7 x d = 42
Ashley bought 21 apples and separated them into 3 bags. She wonders how many apples are in each bag. Write the expression that represents this problem.
3 x a=21
If you graph the inequality 7 + d ≥ 18, would it be an open or closed circle?
closed
If you were to graph the inequality 8c < 64, would it be an open or closed circle?
Open
Solve this inequality. 7 + d ≥ 18
d ≥ 11
Solve this inequality. 10x > 120
12
If you were to graph the inequality 15x < 45, would the arrow be pointing left or right?
left
If you were to graph the inequality 12 + c > 24, would the arrow be pointing left or right?
Right
