21. 8 glasses every 24 hours
Pls help guys pls I need help

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

What is the total surface area of this square pyramid?

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january.what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed.use 3.14 for π .