Question 10 • AZ-Common Core Algebra II B
With Plan B, the price increases by 10% each week: after 4 weeks, $5.00 × 1.1⁴ = $7.32, and after 5 weeks it is about $8.05, so it reaches the $8.00 target during the fifth increase. Plan C takes 6 weeks, Plan D takes 12 weeks ($3.00 ÷ $0.25), and Plan A takes 60 weeks ($3.00 ÷ $0.05). Therefore, Plan B is fastest.
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