Please help, explain if you know?

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)

The graph of h(x)= |x-10| +6 is shown. on which interval is this graph increasing

30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.