Select all that apply Indicate three characteristics of cardiac muscle.
A. Cardiac muscle cells have abundant mitochondria,
B. Each cardiac muscle cell has a single nucleus.
C. Cardiac muscle cells have large transverse tubules.
D. Cardiac muscle lacks striations.
E. Cardiac muscle cells lack sarcoplasmic reticulum.

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.)