Each term is double the one before it, so the appropriate choice is ...
... D. f(x+1) = 2f(x)
3x -1 = 11
3x = 11 + 1
3x = 12
x = 4
I take it by, x2 + x, you mean 2x + x, since x = 4, then
2x + x = 2(4) + (4) = 8 + 4 =12
Answer:
Step-by-step explanation:
20 (8+5+4+3)
Answer:
$9.80
Step-by-step explanation: