Free GRE Practice Questions

Question 1 of 1
Section: Quantitative Reasoning - Multiple Choice with one answer
Topics: Algebra; Quadratic equation
Difficulty level: Medium

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If x and y are positive integers such that 2x+3y=8 and z=x2+y2, what is the maximum value of z?

A. 0

B. 5

C. 13

D. 16

E. 25