What is the solution of the system of equations?

x - 2y = 4
-3x + 6y = 12

A.) (0,-2)
B.) infinitely many solutions
C.) (-2,4)
D.) no solution

The polynomial function of least degree with a leading coefficient of 1 is: f(x) = x3 + ax2 + bx + c

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?