I need help asap thank you

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.

#7. m is the midpoint of pq, the diameter of the circle o is 13in. and rm = 4in. find pm find pq