In order for a field trip to be scheduled, at least 30 students must sign up. so far, 23 students have signed up. at least how many more students must sign up in order for the field trip to be scheduled?

Can (3,5 and square root 34) be sides on a right triangle?

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.

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?