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Stock-Based Compensation (Tables)
3 Months Ended
Dec. 28, 2024
Share-Based Payment Arrangement [Abstract]  
Stock-Based Compensation Expense in Consolidated Statements of Operations
The following presents stock-based compensation expense in the Company’s Consolidated Statements of Income:

 Three Months Ended
 December 28,
2024
December 30,
2023
Cost of revenues$3.5 $2.8 
Research and development2.5 3.2 
Selling and marketing3.7 3.2 
General and administrative20.4 19.5 
$30.1 $28.7 
Weighted-Average Assumptions Utilized to Value Stock Options
The Company uses a binomial model to determine the fair value of its stock options. The weighted-average assumptions utilized to value these stock options are indicated in the following table:

 Three Months Ended
 December 28,
2024
December 30,
2023
Risk-free interest rate4.2 %4.4 %
Expected volatility32.5 %33.4 %
Expected life (in years)4.84.8
Dividend yield— — 
Weighted average fair value of options granted$26.74 $24.93