Help! Solve for x and round to the nearest tenth

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)

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Collin did the work to see if 10 is a solution to the equation r/4=2.4