Question 1

An AM radio wave means that the amplitude is modulated. Thus, instead
of a constant amplitude, there is a varying amplitude. Each AM radio
station in the US is assigned a frequency between 535kHz and 1605kHz.

1. An AM radio wave has an equation of the form
V(t)=A(t)sin(1,850,000t). What is its frequency in kHZ?
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Question 2

Suppose that an FM radio wave has an equation 
V(t)=2sin(2(?)(2,000,000+10,000sin(500(?)(t))

*?=pi

What is the assigned frequency in MHz?