Dylan needs to buy new contact lenses. His ophthalmologist sells 8-lens boxes in packs of 2 for $52 & 10-lens boxes in packs of 4 for $120. Which option is a better buy?

step-by-step explanation:

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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

a is 8.b is 10.c is 10.5. d is -.5

step-by-step explanation:

just minus the smallest number from the biggest.