The subway train shown is traveling at a speed of 30 mi/h when the brakes are fully applied on the wheels of cars b and c, causing them to slide on the track, but are not applied on the wheels of car a. the coefficient of kinetic friction is 0.35 between the wheels and the track.

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step-by-step explanation:

mark brainliest!

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!