Write the explicit formula for this sequence. * 4, 16, 64, 256, ...
A) 4 = 4.3^n-1
B) a =5 .(-2)^n- 1
C) a = 5.34^ n-1
D) a = 4.4^n-1

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

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7