A thermometer is accurate to within 0.6°F The thermometer indicates that Zachary's
temperature is 101.7°F. Write and solve an
absolute value equation to find the extreme
possible values of Zachary's actual temperature.
O 2 – 0.61 = 101.7; 2 = 102.3, x = 101.1
O x + 101.7) = 0.6; x = -101.1, x = -102.3
o 2 – 101.7) = 0.6; x = 102.3, x = 101.1
O x + 101.7) = 0.6; x = 102.3, x = 101.1

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?