Answer:
f(x) = 5x⁵ + 10x⁴ + 3x³ + 8x² - 6x - 3
f(3) = 5(3⁵) + 10(3⁴) + 3(3³) + 8(3²) - 6(3) - 3
= 5(243) + 10(81) + 3(27) + 8(9) - 6(3) - 3
= 1,215 + 810 + 81 + 72 - 18 - 3
= 2,157
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