exam Maths Puzzle Numerical Ability

I need a step by step walkthrough of any proof, and I need it quickly. Someone please help me.

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exam Other Question

The distance traveled by a car at a constant speed is directly proportional to the time spent traveling. If the car went 910 miles in 13 hours, how far will it go in 14 hours? Help me solve this equation: 0.31x+0.49(x+315)=215.15