Find the Vallue of X for which the perimeter is at most 32

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?