) what is 4(2v - 3) - 5(-2v + 4)

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)

Acircle has a circumference of 28.36 units what is the diameter of the circle

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]