Determine the probability:P(A)

Answer choices:
a)0.1
b)0.4
c)0.6
d)0.8

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

What is negative 3/9 times negative 2/8 ?