Jamila paid $2.20 for 5 shark erasers and 1 keychain. Lucia paid $3.40 for 2 shark erasers and 6 keychains. How many cents did Hari pay for 1 shark eraser and 1 keychain?

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

the answer is d

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