exam Maths Puzzle Numerical Ability

If 3x-4y=7 and 5x+2y=3, what is the value of 4x+12y?

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exam Other Question

jon oppened a package of candies and counted them. he found 60 candies in the 1.69ounce package.

estimate the number of candies in a 1-pound (16ounce) bag. explain your thinking Rewrite the expression as a sum, difference,and/or multiple of logarithms
log2[2 square root x / 3]