Let f(x) = 2x^2 - 5x - 18 and g(x) = x+ 2. preform the function operation and then find the domain of the result. (f•g)(x) and f/g(x)

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?