The Lee family recently enjoyed a four-day road trip cross-country to visit relatives. The
mileage (represented as polynomial
expressions) driven each of the four days is
shown in the accompanying table.
Day of Trip Miles Driven
1
x3 - 2x + 7
2 x3 + 6x2 - 4x - 5
3 2x3 - 3x2 + 6x - 1
4
3x3 + x2
Write (in standard form) a polynomial
expression that represents the total miles
driven during this trip.
Show your work.