How do you set up an equation to solve a percent problem? What is the equation?

Find the equation using the point (4,8)

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

Jalen charges $25.50 for every 3 hours of yard work he does for his neighbors. ralph charges $34 for every 4 hours of work that he does. who charges less? opinions: 1.they charge the same amount 2.jalen 3.ralph