The probability that you will get grounded if you have a bad grade is 85%. the probability that you will get grounded and have extra chores is 50%. what is the probability that you will have extra chores given that you are already grounded?

If you are grounded, there are two options - you are only grounded or you have extra chores too. Therefore, at that point, there is a 100% chance of you already being grounded - we need to figure what percentage of 100 the extra chores is. To find that, we can do 50/85= around 59% percent

1.17+3.99a. you combine the terms with a to create 3.99 and the 1.17 stays because it has no like terms or a variable

Set square i think so