If it moves 423 feet in 7 minutes, you divide 423 by 7 to see how much it moves per minute, which is Around 60.4 feet per minute
First you had to remove parenthesis first.

Multiply by the numbers.

Final answer 



Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie
m<E=45.5 m<F=45.5
this is question 8 can't see question 9