Answer:
-10
Step-by-step explanation:
What’s the question for this
8 inches it dropped in 4 weeks.
2 inches times 4 weeks
2x4=8
I believe it's graph C! I hope it will help you...
In both cases, we have cooling. We can add together the 2 functions describing this cooling: z(x) = 0.5x - 9 - [-x-2] = 0.5x - 9 + x + 2, or
z(x) = 1.5x - 7
Provided that this is correct, all we have to do now is to subst. 5 for x:
z(5) = 1.5(5) - 7 = 7.5 - 7 = 0.5 (answer)