Final answer:
The area of Rachel's square garden is found by squaring the length of one side, which is 5 to the 2nd power. The correct answer for the area is 5 to the 4th power or 625 square feet. Hence, C or D are correct.
Step-by-step explanation:
The area of Rachel's garden, which is square in shape, can be calculated by squaring the length of one side. Since the length of one side is 5 to the 2nd power (52), the area is the side length multiplied by itself.
Therefore, the area is 52 × 52, which is 5 to the 4th power (54).
When we multiply exponents with the same base, we add the exponents, so 52 × 52 equals 52+2, which is 54. The value of 54 is 625. Therefore, the correct answer is C. 5 to the 4th power.