What is 54,105,500 in expanded form

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Aresearch group wants to find the opinions’ of city residents on the construction of a new downtown parking garage. what is the population of the survey downtown shoppers downtown visitors downtown workers city residents

Which graph represents the equation y =4x