Christine Lynn travels from her home to a remote island. Her trip involves: car travel of 250 miles, air travel of 400 miles, and a boat ride of 75 miles. She is interested in calculating the average fuel cost per mile (per person) of her trip. Assume the fuel efficiency of car, air, and boat travel is 20, 0.20, and 2 miles per gallon, respectively, and that fuel cost per gallon is equal for all and is $3.00/gallon. She was alone in the car and among 180 people on the plane and 15 on the boat. What is the average fuel cost per mile, per person?

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.