Bloomingdale's marks up mink coats $3000.this represents a 50% markup on cost. what's the cost of coats

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x