What is the solution to this system of equations? x − 2y = 15 2x + 4y = -18 a. x = 1, y = -6 b. x = 1, y = -7 c. x = 3, y = -6 d. x = 3, y = -7

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box

If you flip a coin 3 times, what is the probability of flipping heads 3 times? a. p(3 heads) = 3/8 b. p(3 heads) = 1/6 c. p(3 heads) = 1/8 d. p(3 heads) = 1/2

Plzzz answer both questions and i will give you 100 points