Is -3 greater or less then 4

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

Is there an x intercept in the equation 60*1.15^x

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?