Given: 9x > -36 choose the solution set a.) {x | x < 4} b.) {x | x > 4} c.) {x | x < -4} d.) {x | x > -4}

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)?