How many seven digit numbers are there that begin with the prefix 734 and none of the last four digits repeat

Show me how you find y and determine what y is you i appreciate it : )

The graph below could be the graph of which exponential function?

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.