Question

The temperature in Toronto at noon during a winter day measured 4°C. The temperature started dropping 2° every hour. Which inequality can be used to find the number of hours, x, after which the temperature will measure below -3°C?

Can you please check my answer?
4−2x<−3

Answer 1

looks good to me

check:
now --- 4°
after 1 hr --- 2°
after 2 hrs--- 0°
after 3 hrs--- -2°
after 4 hrs--- -4°
so between 3 and 4 hrs it will reach -3°

4-2x < -3
-2x < -7
x > 3 1/2

Answer 2

4-2x < -3