Please help asap! Will give brainiest worth 50 points!

Solve
√(x+2)+3=6

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?

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me