Adriano runs a website that writers write better stories. every month, adriano receives a subscription fee of $5 from each of the subscribers to his website. the website had 200 subscribers last month. this month 40 new members joined the website and 10 members cancelled their subscription. how much money will adriano’s online business earn this month?

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?