Given these four lines graphed above, what shape is created at the intersections of the lines(Points ABCD)? Select all that apply.

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

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.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10