Answer:
Hours after sunrise Temperature
5 -8.5
7 -7.5
8 -9.75
10 -14.25
Step-by-step explanation:
The temperature rose by 1/2 degrees from -11 degrees for 7 hours, so it would be:
-11 + 1/2(5) = -11 + 2.5 = -8.5, so -9.5 degrees 5 hours after sunrise
For 7 hours it would be -11 + 1/2(7) = -11 + 3.5 = -7.5
After 7 hours, it started to decrease by 2 1/4 degrees per hour for 3 hours, so:
-7.5 - 2.25(1) = -8.5 - 2.25 = -9.75
For 10, it would be:
-7.5 - 2.25(3) = -7.5 - 6.75 = -14.25
