Samir is starting a new business. He recorded his profit over several months and has found that it can be represented using the function f(x) = 105x² – 630x , where x is the number of months since he started the business. Several values of the function are shown in the table. x01 | 2| 3 | 4 | 5 f(x) 0 -525 -840 -945-840-525 7 8 735 1,680 6 In which months is Samir's profit only decreasing? A months 0 through 6 B months 1 through 5 C months 0 through 3 D months 3 through 8

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