In a posteroanterior (pa) projection of the chest being used for cardiac evaluation, the heart measures 14.7 cm between its widest points. if the magnification factor is known to be 1.2, what is the actual diameter of the heart?

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)