Aboat makes a 120-mile trip downstream in 3 hours but makes the return trip in 4 hours.
if b = the rate of the boat in still water and c = the rate of the current, which of the following equations represents the trip upstream?
3(b - c) = 120
4(b - c) = 120
4(b + c) = 120

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If i have 20$ and i gave 5$ away how much i got

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?