There are 2.54 centimeters per inch. If a pencil is 4.5 inches long, what is its length in centimeters? Please explain

What term makes it inconsistent y=2x - 4

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)

Consider the function f(x)=-5x+3 what is f(-2)