exam Maths Puzzle Numerical Ability

Can you show me how to graph y=log2x? The 2 should be subscripted. Can you show me how to plug in points and graph?

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exam Other Question

1. 5 over 2x plus x over 2


2. 4y2(this is y squared) +16y/4y
You invested money on two stocks paying 8% and 10% annual interest, respectively. At the end of the year, the total interest from these investments was $940. How much was invested