A mountain climber ascends on a trail that starts at an elevation of 8,500 feet and ends at an elevation of 17,750 feet. The temperature changes by -4.8°F every 1,000 feet gained in elevation. What is the change in temperature from the start to the end of the trail. Show your work

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