What is the sum of (8b+7)+(6x-4)+(5c+8)

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?

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)