Straight line graph y+x=3

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Find the value of the variable and the length of each secant segment.

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)