You estimate that a jar contains 68 marbles. the actual number is 60. find the percent error. round your answer to the nearest tenth.

Middle schoolmathematics 5 points addison painted her room. she had 50 square meters to paint, and she painted at a constant rate. after 2 hours of painting, she had 35 square meters left. let a(t), denote the area to paint a (measured in square meters) as a function of time t (measured in hours)