Answer:


Step-by-step explanation:
Given

Solving (a): The cost function:
From the given parameter, it shows that the number of floor has no effect on the floors.
So, represent the floors with x.
The cost function is:

Solving (b): The slope and its interpretation
A function is represented as:

Where:

By comparing:
to 

So:

<em>What it means is that, no matter the number of floors, the cost remains unchanged.</em>
Answer:
z=7
Step-by-step explanation:
3z+5=4z-2
5=4z-2-3z
5=z-2
5+2=z
7=z
z=7
I think both answers are C.
(-8,-4) and (-5,-2)
other one
Fix the compass at points P and T
Answer:
D
Step-by-step explanation:
They both have a 1/6 chance of getting the number they need
Answer:
Step-by-step explanation:
6>d-1
Add 1 to each side
6+1 > d-1+1
7>d