Answer:
4
Step-by-step explanation:
Y=20x -1500, y equals the prophet, x is the number of books, 20 is the money made after taking out the cost of production, 1500 is a cost that only occurs once.
the upper quartile is 160
a. 3^4 which is equal to (3^-3)(3^7)
They can play both if they wanted to......