jennifer is traveling with her family to her grandfather's house. They have driven 435.6 miles during the last 7 hours and only have 21.56 miles left. How many miles is the trip to her grandmothers house?

Answer 1

To find the total distance of the trip to Jennifer's grandfather's house, we need to add the distance driven so far during the last 7 hours (435.6 miles) to the remaining distance (21.56 miles).
Thus, the total distance of the trip to Jennifer's grandfather's house is 435.6 + 21.56 = <<435.6+21.56=457.16>>457.16 miles. Answer: \boxed{457.16}.