Ateacher promised a movie day to the class that did better, on average, on their test. the box plot shows the results of the test: box plot labeled 2nd period with min at 77, q1 at 78, median at 89, q3 at 92, max at 100. box plot labeled 4th period with min at 72, q1 at 82.5, median at 89, q3 at 96, max at 97.5 which class should get the reward, and why?

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

391.6 is the correct answer