What two values are not in the domain of

?

Given a positive integer n such that i n = 1, which of the following statements about n must be true? (Note: i 2 = -1)

In the diagram above, ABCD is a square with an area of 100 cm 2 and lines BD and AC are the diagonals of ABCD.

If line EF is parallel to line BC and the length of line CF = 3√ 2 cm, which of the following is equal to the shaded area?

ABC Cabs and Tary Taxicabs both have an initial fare of a whole number of dollars for 1 passenger. The fare increases a whole number of dollars at each whole number of miles traveled. The graphs below show the 1-passenger fares, in dollars, for both cab companies for trips up to 6 miles.

When the fares of the 2 cab companies are compared, what is the cheaper fare for a 5-mile trip?

FILL BLANK
There are seven students on the trivia team. Mr. Randall must choose four students to participate in the trivia challenge.
How many different groups of four students can Mr. Randall form?