How do i solve and simplify this if needed?

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)

Item 1 solve for s. s+24=90 −114 −66 66 114

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2