Which term is a term in this expression? -3x-7(x+4)

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

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?

4+(2+x) can you me solve this problem