Amovie is 2 hours and 28 minutes long. it starts at 7: 50 p. m. at what time will the movie end?

Anyone know? will mark brainliest if correct!

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)

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -