A bag contains 8 red pens, 7 blue pens, and 14 black pens. Denato wants to pull a blue pen from the bag. What is the sample space for this experiment?
NO LINKS, 30 points!

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

Ill mark the brainliest if you me with the these three questions 7,8,9

The figure below shows rectangle abcd and the triangle eca on a coordinate plane. which of the following expressions represents the perimeter of triangle of triangle eca in units