Umbra Umbra 15-02-2025 Mathematics College Translate into a mathematical expression: A number is at least 7 less than 15.A. [tex]x \geq 15 - 7[/tex] B. [tex]x - 7 > 15[/tex] C. [tex]x > 7 - 15[/tex] D. [tex]x = 15 - 7[/tex]