The function h(x)= x^2+3 and g(x)= x^2-6. if g(x) = h(x) +k, what is the value of k

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2