HELP ASAP WILL MARK BRAINLIEST

What is the quadric regression equation that fits these data

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

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.