book Maths Puzzle Numerical Ability

Find the y intercept for the function y=4^x.

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13.7B-6.5=2.36B+8.3 Solve equation with the variable. I do not understand how to work this problem. The sum of two students 3 scores=212. If the 1st is 22 points more than the second, and the sum of the first 2 is 14 more than twice the third. Whats the first score?