Marissa and her family on a ski trip at mount Washington in New Hampshire. They returned from the slopes at 6:00 pm. By 9:00pm the temperature had fallen 18 degrees to the days low temperature of -8 degrees. What was the temperature at 6:00pm?

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14