Brian sat in a massage chair at a shopping mall for 8 minutes and paid $9. Norah sat in the same massage chair for 12 minutes and paid $11. If the relationship between the number of minutes and the amount paid is linear, with x representing the minutes and y representing the amount paid in dollars, which equation models this situation?

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Measure of angles 31 (x+4) (3x+9) me