Which columns do I put the equations in and and what's the factored form for the equation?

What is the simplified form of 7 √x • 7 √x • 7 √x • 7 √x?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

Which of the following describes the symmetry of the graph of y = x3?