PLEASE ANSWER TO ITS ENTIRETY AND INCLUDE STEP BY STEP PLEASE SO I CAN LEARN

YOUR PROBLEM DONE BEFORE WAS VERY HIGH

DO YOU THIN YOU CAN DO THIS ONE TOO LET ME KNOW PLEASE ASAP

Solve Problem and Applications:ch 9- prob 2 at the end of chapters 9 in your textbook.
9-2: 2.  Four key marketing decision variables are price ( P ), advertising ( A ), transportation ( T ), and product quality ( Q ). Consumer demand ( D ) is influenced by these variables. The simplest model for describing demand in terms of these variables is: 

 D  = k - pP + aA + tT + qQ 

where  k, p, a, t, and  q are constants.

A.Discuss the assumptions of this model. Specifically, explanation short but containing direct answer

Not long story about a lot of nothing please

B. how does each variable affect demand? explanation short but containing direct answer

Not long story about a lot of nothing please

C. How do the variables influence each other? explanation short but containing direct answer

Not long story about a lot of nothing please

D. What limitations might this model have? explanation short but containing direct answer

Not long story about a lot of nothing please

 E. How can it be improved? Solution Tip: This is an essay ( 300 WORDS) *****

PLEASE USE EXACT PROBLEM AND SOLVE EXACTLY WHAT HE IS ASKING. HE SAID SOMETIMES ANSWERS ARENT USING DATA HE ASKED USE BOOK PLEASE OR ASK ME. I NEED BETTER GRADE