Pick all that apply to the function below. (yes pick more than one answer) g(x) = −2x^2 + 4x − 7 a. The graph opens up b. The graph opens down c. The y-intercept is 7 d. The axis of symmetry is x = −1 e. The vertex is (1, −5) f. The vertex is a minimum

The lunisolar calendar, in which months are lunar but years are solar—that is, are brought into line with the course of the Sun—was used in the early civilizations of the whole Middle East, except Egypt, and in Greece.

2.The parapegma may have been the invention of Meton and Euctemon, who worked in 5th century bc Athens and were particularly interested in calendars. ... The second century ad Alexandrian astronomer Claudius Ptolemy included a such a calendar in his work known as the Phases of the Fixed Stars and Collection of Weather Signs.

3.According to tradition, Romulus, the legendary first king of Rome, oversaw an overhaul of the Roman calendar system around 738 bce. The resulting calendar, whose structure borrowed heavily from the ancient Greek calendar system, had only 10 months, with March Martius being the first month of the year

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