Answer:
The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!
9% of $2500 = 225
7 × 225 + 2500 = $4075
Answer:

Step-by-step explanation:




1. m<L = 54
2. 65
3. y = 5
4. 18