Question

Can someone please help me with c and d

Answer 1

c. x > 6

d. λ = 3/100

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.

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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.