Question

2)
Which TWO define the same sequence?
A)
f(x) = 7x – 15 for x = {1, 2, 3, ...}
B)
f(x) = 7x – 22 for x = {1, 2, 3, ...}
f(x) = 7x - 29 for x = {1, 2, 3, ...}
D)
a1 = -22 and an + 1 = a + 7 for n = {1, 2, 3, ...}
E)
a1 = -29 and an + 1 = a + 7 for n = {1, 2, 3, ...}

Answer 1

9514 1404 393

Answer:

  C, D

Step-by-step explanation:

It can work to see what sequence each defines:

  A) -8, -1, 6, ...

  B) -15, -8, -1, ...

  C) -22, -15, -8, ...

  D) -22, -15, -8, ...  .  .  .  .  matches C

  E) -29, -22, -15, ...

The two that define the same sequence are ...

  C) f(x) = 7x -29

  D) a1 = -22, a(n+1) = an +7