Which eqation is true when k = -15

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Let event a = you roll an even number on the first cube.let event b = you roll a 6 on the second cube.are the events independent or dependent? why?

Maddie's rectangular kitchen has an area of 10 square yards and a length of 3 3/4 yards.how many yards wide is maddie's kitchen?