Help her with this math homework

If you apply the changes below to the linear parent function f(x)=x what is the equation of the new function vertically stretched by a factor of 3 flip over the x axis

Walking at a constant rate of 8 kilometers per hour, juan can cross a bridge in 6 minutes. what is the length of the bridge in meters?

Ebert used to make $22 an hour, but got a 10% raise. how much more will he make in a 40 hour work week with raise?