What is the y -intercept of the graph of the function f of x is equal to x squared plus 3 x plus 5 ?

The y-intercept occurs where x = 0. Substitute 0 into f(x) = x² + 3x + 5: f(0) = 0² + 3(0) + 5 = 5. So the y-intercept is (0, 5), choice C.

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