Question

7th grade.
reasoning about equations and tape diagrams. don't do number 6

Answer 1

4. x=3

5. 27

Explanation:

4. 6(x+1) = 24, because you work the equation backwards and the opposite way, 24/6 then - 1

5. put the numbers from lowest to highest temperature

9'c, -3'c, 22'c, -5'c, 11'c, 15'c

-5'c, -3'c, 9'c, 11'c, 15'c, 22'c

range - is the highest number - lowest

22--5 =22+5 , therefore range is 27