It rained 0.5 inches on Tuesday and 0.2 inches on Wednesday. It was warmer on Thursday than it was on Friday.
The humidity was 15% for 3 days of the week.
The lowest temperature overnight was 68∘F.
Which quantity is a variable?

the temperature on Friday

the lowest overnight temperature

the amount of rain on Wednesday

the number of days with humidity of 15%the number of days with humidity of 15 percent

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