Greg was playing tennis with his friend Tony. Tony suddenly clutched his chest and fell to the ground. Tony was shallowly breathing. After calling 911, Greg performed chest compressions on Tony and waited for the paramedics to arrive. The paramedics were surprised to see Greg performing chest compressions on his friend. Why were the paramedics most likely surprised? Only trained people like paramedics can do chest compressions. Greg's friend was breathing and did not need chest compressions. Tony needed to be at the hospital before having chest compressions administered. Greg should have waited for the paramedics to arrive before doing chest compressions.

You began membership in a new health and fitness club which has access to a dietician and personal trainer. they you develop a special eight-week diet and exercise program. the data in the following table represents your weight, w, as a function of time, t, over an eight-week period. time (weeks) 0 1 2 3 4 5 6 7 8 weight (lb) 150 144 143 141 140 137 137 132 129 your weight decreases during each of the first five weeks of the program. determine the actual change in weight over the first five weeks of the program by subtracting your initial weight from your weight at the end of the first five weeks. what is the sign of your answer? what is the significance of this sign? a. 137-150 = -13 lb; a change in weight is negative because the weight decreases. b. 137-150 = 13 lb; a change in weight is positive because the weight decreases. c. 150-137 = -13 lb; a change in weight is negative because the weight increases. d. 150-137 = 13 lb; a change in weight is positive because the weight increases.

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