The correct option is: Option (B) $\sum_{i=1}^{7} (5i-2)$

Explanation:

First thing is that the difference between each number in the series with the next number is 5. It means it must be the multiple of 5. There are two options that contain multiples of 5: Option B and Option D. Now in the option D, the upper limit is 6. If we put 6 in the expression: 5(6)-2, the last term would be 28. However in the series given in the question, the last term is 33. Hence 5(7) - 2 = 35 - 2 = 33 which is Option B.

When i=1: 5(1)-2 = 3
When i=2: 5(2)-2 = 8
When i=3: 5(3)-2 = 13
.
.
When i=7: 5(7)-2 = 35-2 = 33
Hence the correct option is (B).

3 0

3 years ago

How do you solve 4(x-3?

Sindrei [870]

I'm guessing that you meant to type 4(x - 3). If that's the case, then you can solve this using the Distributive Property.

4(x - 3) Multiply the number on the outside of the parentheses by both of the numbers on the inside.

(4 · x) - (4 · 3)
(4x) - (12) Now, simplify by taking out the parentheses.

4x - 12

8 0

3 years ago

Read 2 more answers

What is the slope of (-3,12) and (-8,17)

stepan [7]

Answer:

- 5/11

Step-by-step explanation: