77/8 equals 3 1/4 find the differences?

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?

To decrease an amount by 16% what single multiplier would you use