7. The temperature on Tuesday was -6 degrees Celsius. By Wednesday, the temperature rose to -3 degrees Celsius. What number represents the change in temperature? B. -9 b. -3 C. 3 d. 9

To find the change in temperature, we need to subtract the temperature on Tuesday from the temperature on Wednesday.<br /><br />The temperature on Tuesday was $-6$ degrees Celsius, and the temperature on Wednesday was $-3$ degrees Celsius.<br /><br />So, the change in temperature is:<br />$-3 - (-6) = -3 + 6 = 3$<br /><br />Therefore, the correct answer is:<br />C. 3