One times a number x, plus 2 times a number y, equals 9. negative one times x minus 3 times y equals -14. what are the numbers?

a. x = 7, y = 12

b. x = -1, y = 5

c. x = 5, y = 1

d. x = -11, y = 24

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?