The table shows the mean daily temperature in North Dakota during a week in February. Which statement about the data is true?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0