4. two cars are starting from positions that are 20 miles apart. they are both headed for the same intersection, as depicted in the diagram below. car a is traveling at 30 mph, and car b is traveling at 45 mph. which car will reach the intersection first? part i: use the law of cosines to determine how far car b has to travel to reach the intersection. (2

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!