Solve for X?
3x +9= -24

Is the open sentence 5x-2=3x+2 true when x=2? justify your answer.

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)

Find the commission on a $590.00 sale if the commission is 15%.