A swim pass costs $30 for the first month. Each month after that, the cost is $20 per month. Riley wants to swim for 12 months.
1 answer:
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Answer:
u = ± 4
Step-by-step explanation:
Given
u² = 16 ( take the square root of both sides )
u = ± = ± 4
u = - 4, u = 4