For the second problem the answer D, -9, -11
I believe it is B, as C and D both are based on the number of books sold while the only variable to determine the amount of money she earns are the additional doors she knocks on.
Step-by-step explanation:
this is the answer key for that question and etc...
Answer:
false all the quadratic equations cannot be solved by factorising there is also graphical method to get the solution