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The table shows values of n and f(n) for the equation f(n) =

n(n+3)

2.

f(n)

1

2

2

5

3

9

4

?

What is the value of f(n) when n =

= 42

A 12

B. 13

C. 14

D. 28

E

The table shows values of n and f n for the equation f n n n 3 2 f n 1 2 2 5 3

Answer :

Final answer:

The value of f(n) when n = 42 is 945.

Explanation:

The given table shows the values of n and f(n) for the equation f(n) = n(n+3)/2. To find the value of f(n) when n = 42, substitute the value of n into the equation and solve:

f(42) = 42(42+3)/2 = 42(45)/2 = 1890/2 = 945

So, the value of f(n) when n = 42 is 945.

I looked at the the picture and the answer is A. 12

I guess the 2 was supposed to be a question mark judging by the picture...

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