I need some help with geometry.

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)

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

Write the standard form of an equation with (see picture below)