The largest price which will bring the amusement park a profit greater than $4200 will be $65.
Let x be the number of additional tickets that can be sold.
It should be noted that the revenue is gotten by multiplying the number of tickets by the price.
Therefore, (60 + x)(70 - x) > 4225
The appropriate value that fits in will be 5.
Therefore, (60 + x)(70 - x) > 4225 will be:
= (60 + 5) × (70 - 5)
= 65 × 65
= 4225
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