A new car purchased for 27000 loses 15 percent of its value each year

The graph shown is the graph of which function?

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

50 points~ ! i have to turn this in tomarrow