A washer and a dryer cost $1050 combined. The washer costs $100 more than the dryer. What is the cost of the dryer?
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Let's analyse the function
The amplitude is A, so we want A=1.5
Now, we start at x=0, and we have
After one second, i.e. x=1, we want this sine function to make 330 cycles, i.e. the argument must be
So, we have
so, the function is