If x^(-2) = 16, what is the value of x^2?
A mechanic can install carburetors in 3 cars every 4 hours. At that rate, how long will it take the
mechanic to install carburetors in 5 cars?
A.) 6 hours 20 minutes
B.) 6 hours 40 minutes
C.) 7 hours 15 minutes
D.) 7 hours 40 minutes
E.) 7 hours 45 minutes
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