Find the result of 3(a−b−c)+a−bb−c; if a = -1, b = 1, and c = -3.
WITH PROCEDURE PLEASE

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. how many hours after the truck's departure will the two meet?

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

Simplify (2^5/3^2)^4 a. 2^20/3^8 b. 2^9/3^8 c. 8^5/12^2 d. 2/3^2