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Stock-Based Compensation (Tables)
9 Months Ended
Jun. 29, 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 EndedNine Months Ended
 June 29,
2024
July 1,
2023
June 29,
2024
July 1,
2023
Cost of revenues$2.6 $2.1 $8.5 $7.7 
Research and development2.2 2.1 8.4 8.6 
Selling and marketing3.5 2.9 10.4 9.2 
General and administrative6.3 9.8 41.8 35.1 
$14.6 $16.9 $69.1 $60.6 
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 EndedNine Months Ended
 June 29,
2024
July 1,
2023
June 29,
2024
July 1,
2023
Risk-free interest rate4.4 %4.3 %4.4 %4.3 %
Expected volatility33.4 %33.9 %33.4 %33.9 %
Expected life (in years)4.84.84.84.8
Dividend yield— — — — 
Weighted average fair value of options granted$26.44 $30.51 $25.06 $25.95