The following table shows the length, in centimeters, of the humerus and the total wingspan, in centimeters, of several pterosaurs, which are extinct flying reptiles. (A graphing calculator Is recommended.) Pterosaur Data Humerus, x Wingspan, y Humerus, x Wingspan, y 24 590 20 490 32 740 27 580 22 420 15 310 17 380 15 300 13 260 9 240 4.4 68 4.4 56 3.2 52 2.9 51 1.5 25 (a) Find the equation of the least-squares regression line for the data. (Where x is the independent variable.) Round constants to the nearest hundredth. (b) Use the equation from part (a) to determine, to the nearest centimeter, the projected wingspan of a pterosaur if its humerus is 56 centimeters. cm