Do not solve the system below. Its solution is (x, y) = (1, 1). Instead, answer the questions.

3x + 4y = 7
5x + 10y = 15

If you were going to solve the system above, what
would be the best first step according to the
strategy you just learned?
Solve for x in the first equation.
Solve for y in the first equation.
Solve for x in the second equation.
Solve for y in the second equation.

explain your reasoning .

City l has a temperature of −3 °f. city m has a temperature of −7 °f. use the number line shown to answer the questions: number line from negative 8 to positive 8 in increments of 1 is shown. part a: write an inequality to compare the temperatures of the two cities. (3 points) part b: explain what the inequality means in relation to the positions of these numbers on the number line. (4 points) part c: use the number line to explain which city is warmer. (3 points)