3x - 4 4 Write in complete sentences and do all of the math steps and show your work for every step.

Pick the description of a geometric object that best matches the real world object box for a deck of card

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

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)