Clara estimates that the length of a hiking trail is 5.75 km. she later learns that its actual length is 6.25 km. what is the percent error in clara's estimate, to the nearest tenth of a percent? 7.7% 8.0% 11.0% 11.5%

8.0% is the answer. To solve these problems just do actual length minus her guess which gives you 0.5. Then divide what you got by the actual length. 0.5 divided by 6.25 is 0.08. Multiply that by 100. 0.08 x 100 is 8 which means the answer is 8.0% :)

Y= - 4x +3if you test it with any of the x values for example x=2: -4(2)+3 = - 8 + 3 = - 5you get the matching ^^^ y value