Weegy: 2x - 4y for x = 2 and y = 4; 2(2) - 4(4) = 4 - 16 = -12 User: Simplify.
x2(2x3 - 3) - 3x(x + 4) User: Write the nth term of the following sequence in terms of the first term of the sequence.
1, 8, 15, 22, . . . (More)

Write the nth term of the following sequence in terms of the first term of the sequence 1, 8, 15, 22, . . . is 7n - 6. The common difference = 22 - 15 = 7; nth term = 1 + (n - 1)*7 = 7n - 7 + 1 = 7n - 6

Added 3/16/2016 6:44:53 PM

This answer has been confirmed as correct and helpful.

Confirmed by Andrew. [3/16/2016 11:52:43 PM], Rated good by Andrew.

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