Y=2x + 6. ( because 2x is 2 quarters a day and you started with 6
The area of a parallelogram is denoted by b * h, where b is the base and h is the height.
In this case, the b is 15 inches, and the h is 4 inches. Multiply these together and you get: 15 * 4 = 60 square inches.
Since you are not allowed to draw a black marble, then you have only 7 ways to draw either a blue or a red marble. The sum of all marbles is 10. So the probability of not drawing a black marble is 7/10 and the probability of drawing a red marble is 2/10 or 1/5.
