In this system of equations, which variable would it be easiest to solve for?

x + 3 y = 13.
3 x + 2 y = 25.

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Pl approximate the value of 13−−√ to the nearest tenths place. plot the approximation on the number line.

Which graph represents the same relation as the table below? x f(x) –2 5 0 1 1 –1 2 –3