Laura checked her outdoor thermometer and noticed that the temperature rose from 31 degrees in the morning to 45 degrees in the afternoon. What is the approximate percent increase for the day so far?

The temperature increased by 45 − 31 = 14 degrees. To find the percent increase, divide the increase by the starting temperature: 14 ÷ 31 × 100 ≈ 45%. So the increase is approximately 45 percent, choice D.

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