Question

if laura bikes x miles to and from her friend's house each day, what expression can be used to calculate the total distance she travels in a week

Answer 1

Well a week has 7 days and because the x is unknown, we would say 7x

Answer 2

The expression to find total miles is
total miles=7x
Because there is 7 days in the week and she bikes x miles each of the 7 days.