Which sequences are geometric sequences? Check all that apply. 4.2.1.1
1 1
2 4
-2,3,-4,5, -6, ...
2,6, 18, 54, 162, ...
O-4, -16, -64, -256, ...
0 -2,-4, -12, -48, -240, ...

Pls! does anybody know a shortcut for answering these types of questions in the future?

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)

Lucy is a dress maker. she sews \dfrac47 7 4 ? of a dress in \dfrac34 4 3 ? hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable.