Question

the temperature at 4 a.m. was -13°f. the temperature was rising at a steady rate of 5°f an hour. At what time will the temperature be 12°f?

Answer 1

9:00AM because of the equation 5X+-13=Y where Y=12

Answer 2

the temp. rose by 25 degrees. divide that by 5 and it equals 5. so, add 5 hours to four o clock and you get 9:00