This is geometry btw Find the volume of the figure

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Use the distance formula to find the distance between (-3,5) and (3,1)

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.