At a certain hospital, 45 patients have lung cancer, 35 patients smoke, and 30 have lung cancer and smoke. Suppose the hospital contains 225 patients. If a patient chosen at random is known to smoke, what is the probability that the patient has lung cancer? If a patient chosen at random is known to smoke, the probability that the patient has lung cancer is

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!

answer: 7

step-by-step explanation:

a is the best answer choice