Question

Can someone please help me with c and d

Answer 1

Answer:

  c. x > 6

  d. λ = 3/100

Step-by-step explanation:

c. You have the idea for the necessary equation:

  speed = wavelength·frequency

  $10^y=10^{-3}\cdot 10^x \qquad\text{substitute given values}\\\\y=x-3 \qquad\text{take logs, or equate exponents}\\\\x-3>3 \qquad\text{substitute into the y inequality}\\\\x>6 \qquad\text{add 3}$

The inequality is x > 6.

__

d. If λ represents the wavelength in nanometers, the range restriction can be written ...

  2/100 < λ < 5/100

A possible value of λ is 3/100.