Yesterday, the temperature dropped 4 degrees every hour. Which number sentence best shows how much the temperature changed in 6 hours? A. 6(4) = 24
B. 6(-4) = -24
C. -6(-4) = 24
D. -6(4) = -24

I think it is b

Step-by-step explanation:

if it drops by 4 it would be negative. 6 hours passed so it would be positive

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!