A triangle one angle measuring 3x degrees a second angle measures 2x+20 degrees and the third measures 4x-20 degrees. what is the value of x

Sarah is collecting recyclables for a science project. on the first day she collected 35 recyclable objects. on the second day she had a total of 52 recyclables. on the third day she had a total of 69 recyclables. determine if the scenario describes an arithmetic or a geometric sequence. then, write the recursive formula for the sequence described.