1. The introduction of steamboats a. led to dramatic declines in the price of upstream transport. b. led to moderate declines in the price of downstream transport. c. is the primary reason for falling transportation costs in the early 1800s. d. led to an initial decrease in transport costs that continued to fall due to learning by doing and the construction of lighter boats with increased capacity. e. All of the above. Group of answer choices

The person in charge of managing the reputation of a brand is called?

Ahospital purchases a $500,000 magnetic resonance imaging (mri) machine that has a useful life of 9 years. the salvage value at the end of 9 years is $77,000. (a) write a linear equation that describes the value y (in dollars) of the mri machine in terms of the time t (in years), 0 ≤ t ≤ 9. (b) find the value, in dollars, of the machine after 6 years. $ (c) find the time, in years, when the value of the equipment will be $140,000. (round your answer to two decimal places.) yr

Explain the chemical change the causes corrosion