from typing import Sequence


def horner(poly: Sequence[float], x: float) -> float:
    """Evaluate a polynomial at specified point using Horner's method.

    In terms of computational complexity, Horner's method is an efficient method
    of evaluating a polynomial. It avoids the use of expensive exponentiation,
    and instead uses only multiplication and addition to evaluate the polynomial
    in O(n), where n is the degree of the polynomial.

    https://en.wikipedia.org/wiki/Horner's_method

    Arguments:
    poly -- the coeffiecients of a polynomial as an iterable in order of
            ascending degree
    x -- the point at which to evaluate the polynomial

    >>> horner((0.0, 0.0, 5.0, 9.3, 7.0), 10.0)
    79800.0
    """
    result = 0.0
    for coeff in reversed(poly):
        result = result * x + coeff
    return result