Answer:
A cubic function
Step-by-step explanation:
When you multiply powers of a same base, the exponents sum. So, if we multiply a function like
with a function like
we get
![(ax^2+bx+c)(dx+e) = adx^3+bdx^2+cdx+aex^2+bex+ce = adx^3+(bd+ae)x^2+(cd+be)x+ce](https://tex.z-dn.net/?f=%28ax%5E2%2Bbx%2Bc%29%28dx%2Be%29%20%3D%20adx%5E3%2Bbdx%5E2%2Bcdx%2Baex%5E2%2Bbex%2Bce%20%3D%20adx%5E3%2B%28bd%2Bae%29x%5E2%2B%28cd%2Bbe%29x%2Bce)
which is a cubic function, because it is written in the form
![\alpha x^3+\beta x^3 + \gamma x + \delta](https://tex.z-dn.net/?f=%5Calpha%20x%5E3%2B%5Cbeta%20x%5E3%20%2B%20%5Cgamma%20x%20%2B%20%5Cdelta)
'B' and 'D' are correct.
'C' isn't, and we don't know about 'A' because you left it out.
X/(9+11)=4 bc x is the “number” and “9, and 11” means add them together. Put the in parenthesis
Answer:
Company B
Step-by-step explanation:
Company A charges 25 per window, company b charges 40 per window, and company c charges 35 per window so company b has the highest rate