5. A tree's age and volume are related linearly as shown in the graph below. Round slopes and y-intercepts to 3 decimal places a) Find the equation for the trend line using the regression feature of your graphing calculator b) Use your regression equation to predict the volume of a 15 year old tree, accurate to 1 decimal place. c) Use your regression equation to predict the age of a tree with a 500 m volume, rounded to the nearest year. Tree Age-vs-Volume 400 Age 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Volume (m) 143 157 168 178 189 199 212 221 237 248 261 272 278 288 299 304 318 327 340 349 350 300 Volume (m') 250 200 150 100 20 25 35 30 Age (years) 35