A bag of marbles has 3 red and 6 green marbles. What is the probability of selecting two red with replacement?

How can we find the measure of an exterior angle if we know the measurement of an interior angle

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?