Which digit in 2,394,678 has a value that is greater than 10 times the value of the first digit to its right

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Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.

Which expression is the factorization of x^2+10+21