PLEASE HELP !!

rewrite the following without an exponent.
(3/5) to the -3 power

refer to the pic attached for steps

-142

Step-by-step explanation:

Recognize that each term is 7 less than the preceding term.  Thus, this is an arithmetic function with common difference -7.

The formula for the nth term is a(n) = 19 - 7(n -1).

Here we want the 24th term.  Substitute 24 for n in the above formula:

a(24) = 19 - 7(24 - 1) = 19 - 7(23) = -142

The 24th term is -142.