Answer:
Sales increase with a decrease in the price.
Step-by-step explanation:
Answer:
A=B
Step-by-step explanation:
If AUB=A∩B then both A and B contain the values both have hence they're equal
Answer:

Step-by-step explanation:
observe by inverse definition of a function

Answer:
20x3 - 23x3 -4x+4
Step-by-step explanation: