!PLEASE HELP! Cory went shopping for his kids. He bought 10 pairs of
socks for $2.50 each and 3 pairs of shoes for d dollars
each. He spent a total of $135.88.
Use the equation 3d + 10(2.50) = 135.88 to
determine how much one pair of shoes, d, cost.
(Use inverse operations.)

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)?