Tamara texted a photo of a dolphin to 5 friends. She asked each friend to text the photo to 5 more friends. The photo chain continued . How many photos of the dolphin will be text 4 rounds? Write and evaluate an expression that shows number if photos.

5^4 = 625

To find the number of photos of the dolphin that will be text in 4 rounds, we can break down the problem into each round.

In the first round, Tamara sent the photo to 5 friends, so there are 5 photos.

In the second round, each of the 5 friends would have texted the photo to 5 more friends, resulting in 5 x 5 = 25 photos.

In the third round, each of the 25 friends from the second round would have texted the photo to 5 more friends, resulting in 25 x 5 = 125 photos.

Finally, in the fourth round, each of the 125 friends from the third round would have texted the photo to 5 more friends, resulting in 125 x 5 = 625 photos.

To write an expression that shows the number of photos, we can use the formula: 5 x 5^rounds, where "rounds" is the number of rounds. In this case, since we want to find the number of photos in 4 rounds, the expression would be 5 x 5^4.

To evaluate the expression, we can substitute 4 for "rounds" in the expression:
5 x 5^4 = 5 x 625 = 3125.

Therefore, the number of photos of the dolphin that will be text in 4 rounds is 3125.