The mean temperature for the first 4 days in January was -7°C. The mean temperature for the first 5 days in January was -5°C.
What was the temperature on the 5th day?

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?