Mark is solving the equation 4x2 = 12x - 9 using the quadratic formula.

which values could he use for a, b and c?

a = 4, b = -12, c = 9

a = 4, b = 9, c = -12

a = 4, b = -9, c = 12

a = 4, b = 12, c = -9

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)?