Which of the following ordered pairs represents the solution to the system given below?
x − 4y = 7 5x + 9y = 6
(3, −1)
(3, 1)
(1, −3)
(−1, −3)

Acabinmaker buys 3.5 liters of oat varnish the varnish cost $4.95 per liter what is the total cost of 3.5 liters

Two consecutive negative integers have a product of 30. what are the integers?

Aski resort is charging $37.50 to rent a snowmobile for 5 hours. at this rate what will be the cost for a family of 5 to rent snowmobiles for 3 hours on the first day of their vacation and 4 hours for on the last day of their vacation