What is the domain of h?HELPPP

Rewrite the equation x = 65 - 60p by factoring the side that contains the variable p.

Talia took the bus from her home to the bank and then walked back to her home along the same route. the bus traveled at an average speed of 40 km/h and she walked at an average speed of 5 km/h. to determine the time, x, that it took talia to walk home, she used the equation 40(0.9 – x) = 5x. the time of trip 2 is hours. the distance of trip 1 is km.

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.