3. Write each expression as a power. a. $(-5) \times(-5) \times(-5)$ b. $1.05 \times 1.05 \times 1.05 \times 1.05 \times 1.05 \times 1.05$ c. $\left(-\frac{3}{5}\right) \times\left(-\frac{3}{5}\right) \times\left(-\frac{3}{5}\right)$

Step 1 ：The question is asking to express each multiplication as a power. In mathematics, a power is a number multiplied by itself a certain number of times. The number of times a number is multiplied by itself is represented as an exponent. For example, \(2 \times 2 \times 2\) can be written as \(2^3\).

Step 2 ：For the first expression, \((-5) \times(-5) \times(-5)\), we can see that -5 is multiplied by itself 3 times. So, we can write this as \((-5)^3\).

Step 3 ：Final Answer: \((-5) \times(-5) \times(-5)\) can be written as a power as \(\boxed{(-5)^3}\).