exam Maths Puzzle Numerical Ability

Select the line parallel to 6x + 14y=20

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1- A 12-foot ladder is leaning against a vertival wall, makes an angle X with the floor. If the top of the ladder is h-foot up the wall,express h in terms of X and th A bus leaves a station at 1 p.m., traveling west at an average rate of 44 mi/h. One hour later a second bus leaves the same station, traveling east at a rate of 48 mi/h. At what time will the two buses by 274 mi apart?