Sagot :
Write a model that determines the total costs of her mobile calls to other networks using a mathematical statement.
ANS. 5.50x + 6y > 300
- Inequality, The two expressions are not necessarily equal which is indicated by the symbols: >, <, ≤ or ≥.
1. x>y, x is greater than
2. x ≥ y, x is greater than or equal to y
3. x<y, x is less than y
4. x ≤ y