Question

TIME REMAINING

40:43
The outside temperature at midnight today in Polina's hometown was 18°F. The temperature increases by 1.2°F each
hour over the next 15 hours. Polina's school does not send students outside for recess if the outside temperature is
32°F or lower. Recess at her school always starts on the half hour or hour. Which statement is true about recess at
Polina's school?
Only students who have recess at 11:00 a.m. or later may go outside.
Only students who have recess at 11:30 a.m. or later may go outside.
Only students who have recess at 12:00 p.m. or later may go outside,
Only students who have recess at 12:30 p.m. or later may go outside.
Save and Fxit

Answer 1

12pm or later

Explanation:

if she is starting at midnight, 12am, then it would take 12 hours to make the temperature above 32.

write an inequality that describes the situation. the starting temperature is 18, so we add the 18 to the rest of the inequality because that is what we have already so we really don't have to do anything with it. 1.2 is for the amount that the temperature rises at and x is for how many hours it will take. this all needs to be greater than 32 degrees.

18+1.2x>32

-18 -18

1.2x=14

/1.2 /1.2

x=11.67

this decimal place means that it would take over 11 and a half hours for the temperature to be above 32. therefore, anytime after 12pm would be ok for the kids to go outside.