CW 1 ADD MATH

Choose the correct answer from the given four options:
In an AP, if d = –4, n = 7, a_n = 4, then a is

• 6
• 7
• 20
• 28

Tags

CCSS.HSF.BF.A.2

Choose the correct answer from the given four options:
The 10th term of the AP: 5, 8, 11, 14, ... is

• 32
• 35
• 38
• 25

Tags

CCSS.HSF.BF.A.2

Which term of the AP: 21, 42, 63, 84,... is 210?

• 9^th
• 10^th
• 11^th
• 12^th 

Tags

CCSS.HSF.BF.A.2

If the common difference of an AP is 5, then what is a₁₈ – a₁₃ ?

• 5
• 15
• 25
• 10

Tags

CCSS.HSF.BF.A.2

The 9th term of the G.P 1, 4, 16, 64,... is

• $4^8$

• $4^9$

• $4^7$

• $4^{10}$

Tags

CCSS.HSF.BF.A.2

The sum of 7 terms of the G.P 3, 6, 12, ... is

• 380

• 381

• 382

• 379

Tags

CCSS.HSA.SSE.B.4

The nth term of a G.P is 128 and the sum of its n terms is 225. If its common ratio is 2, then its first term is

• 1

• 3

• 8

• none of these.

What is the common ratio for the sequence:
28, 14, 7, 3.5...

• 2
• 1/2
• -14
• -7

How do you proceed to the next term in this sequence    1, 3 , 9 , 27

• add 3 to the preceding term 
• multiply the preceding term by 3

What is the 4^th term....3, 6, 12,... 

• 24
• 21