Question

Find the 7th value of A^n = 2.5 + (n - 1)4.

A^7 = ?

Answer 1

To find the 7th value of the expression \( A^n = 2.5 + (n - 1)4 \), we can substitute \( n = 7 \) into the formula.

\[
A^7 = 2.5 + (7 - 1)4
\]

First, calculate \( 7 - 1 \):

\[
7 - 1 = 6
\]

Now substitute this back into the equation:

\[
A^7 = 2.5 + 6 \times 4
\]

Next, calculate \( 6 \times 4 \):

\[
6 \times 4 = 24
\]

Now, substitute \( 24 \) into the equation:

\[
A^7 = 2.5 + 24
\]

Finally, add \( 2.5 \) and \( 24 \):

\[
A^7 = 26.5
\]

Thus, the 7th value of \( A^n \) is

\[
\boxed{26.5}
\]