If the function f(x)=x to the 2nd power minus 2x minus 15 has the roots at the points (-3,0) and (5,0) what’s the vertex of the function ?

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

F(x)=5/6x+3 which of the following is true

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4