What paper is that ?

What are the solutions of the system? y = x^2 + 2x +3y = 4x - 2a. (-1, -6) and (-3, -14)b. (-1, 10) and (3, -6)c. no solutiond. (-1, -6) and (3, 10)

Charlie tosses five coins.what is the probability that all five coins will land tails up.

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle