What is a equivalent expression to z+z+z+z

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?

In the triangle below, what is the length of the side opposite the 60° angle?

Use the domain {½ , 1, 2, 4, 8} to plot the points on the graph for the given equation. the grid marks represent one unit, the horizontal red line represents the x-axis, and the vertical red line represents the y-axis. y = log_2 x