On a cross-country road trip, the total number of miles driven is shown on the graph. Write an expression to show the number of miles driven after any number of days(x)

A: 800x
B: 300x
C: 400x
D: 200 + 200x

On a crosscountry road trip the total number of miles driven is shown on the graph Write an expression to show the number of miles driven after any number of da class=