Answer:
volume before window is taken out = lwh
volume of window is w^3
total volume is..... as given in pic
this is right
...............
Answer:

Step-by-step explanation:
First, distribute all terms

Get all terms with R onto the same side

Factor out the R

Divide by (T-S) to isolate R

Answer:
4,1
Step-by-step explanation:
Answer:
Postage(weight) or p(w)
Step-by-step explanation:
Not exactly sure because math really isn't something I'm good at, but I do belive it's C. Multiplication.