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The voltage of two alternating electrical currents are given by V0​=3sin(ωt) and V1​=8sin(ωt+120°).
The voltages add to give a total of Vsin(ωt+θ).
Find V and θ.
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At a car rental company A, the following prices are offered for a 1 day rental.
Pickup & cleaning cost: $45
Gas and depreciation: $0.7 per mile driven
Write down an expression for A(x), the cost of a rental driven x miles.
A customer rents a car from company A and drives it 80 miles in a day.
Calculate the cost of the rental to the nearest dollar.
A competitor, company B, offers the following prices for a 1 day rental.
Pickup & cleaning cost: $65
Gas and depreciation: $0.48 per mile driven
Find the minimum distance a customer must drive (to the nearest mile) for company B to become a cheaper option than company A.
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