Question

9. In City A, the temperature rises 9 from 8 A.M. to 9 A.M. Then the temperature drops 8 from 9 A.M. to 10 A.M. In City B, the temperature drops 5º from 8 A.M. to 9 A.M. Then the temperature drops 4º from 9 A.M. to 10 A.M.
a. What expression represents the change in temperature for City A?

b. What integer represents the change in temperature for City A?

c. What expression represents the change in temperature for City B?

d. What integer represents the change in temperature for City B?

e. Which city has the greater change in temperature from 8 A.M. to 10 A.M.? 10.​

Answer 1

Answer:

A : let the temperature be x then expression would be x+1

B: (+1)

C: let the temperature be y then expression would be y-9

D: (-9)

E: city B