Eli had too many fish in his old fish tank. he got a new fish tank and moved 18 fish from the old tank to the new tank. he still had 23 fish in his old tank.

how many fish were in eli's old fish tank at the start?

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?