Write the coordinates of the vertices after a reflection over the y-axis

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Acircle has a circumference of 7.850 units. what is its radius?

Is the response to the survey question "did you smoke in the last week question mark "response to the survey question "did you smoke in the last week? " a discrete random variable, a continuous random variable, or not a random variable?