SOLUTION: The temperature recorded in a certain region at 7:00 a.m. it was -4°C, at 9:00 a.m. rose 3°C, and then at 10:00 a.m. dropped 2°C. From now until 2:00 p.m. increased 2°C per hou

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: The temperature recorded in a certain region at 7:00 a.m. it was -4°C, at 9:00 a.m. rose 3°C, and then at 10:00 a.m. dropped 2°C. From now until 2:00 p.m. increased 2°C per hou      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1197359: The temperature recorded in a certain region at 7:00 a.m. it was -4°C, at 9:00 a.m. rose 3°C, and then at 10:00 a.m. dropped 2°C. From now until 2:00 p.m. increased 2°C per hour. What was the temperature at 1:00 p.m.?
A) -4
B) -3
C) -1
D) 3
Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!


at 7%3A00a.m. it was -4°C
at 9%3A00+a.m. rose 3°C=>-4°C+3°C=-1°C
at 10%3A00 a.m. dropped 2°C=>-1°C-2°C=-3°C

From now until 2%3A00+p.m. increased 2°C per hour:
from 10%3A00 a.m to 1%3A00 p.m is 3 hours, temperature increased 3%2A2°C =6°C
since at 10%3A00 a.m was -3°C, the temperature at +1%3A00 p.m is: -3°C +6°C= 3°C

answer: D) 3


Answer by ikleyn(52770) About Me  (Show Source):
You can put this solution on YOUR website!
.

Use your fingers to make all necessary calculations on your own.

Do not disturb the respectful tutors with such primitive questions.