The temperature falls from 0 degrees to -12 1/4 degrees in 3 1/2 hours. which expression finds the change in temperature per hour?

-7/2 degrees per hour

Step-by-step explanation:

Divide the total change (-12 1/4 degrees) by the total time elapsed (3 1/2 hrs):

-49/4 degrees          -49(2)

= = -7/2 degrees per hour

    7/2 hrs                   4(7)

correct answer is infinitely many solutions

step-by-step explanation:

2(2x + 3) = -4 + 2(2x + 5)

solving the above equation:

4x + 6 = -4 +4x +10

combining like terms

4x -4x = -4+10-6

0=0

since both sides are 0=0, we end up into true statement it means it has infinite many solutions.

so correct answer is infinitely many solutions