Final answer:
To find the percent increase, subtract the initial number of turtles from the current number of turtles. Divide that difference by the initial number of turtles and multiply by 100%. The percent increase is 233.33%.
Step-by-step explanation:
To find the percent increase, you need to calculate the difference between the number of turtles this week and the number of turtles in the pond initially. Then divide that difference by the initial number of turtles and multiply by 100%.
First, subtract the initial number of turtles (3) from the current number of turtles (10), which gives you a difference of 7.
Next, divide the difference (7) by the initial number of turtles (3) and multiply by 100%.
Taking the calculation, (7/3) x 100%, you get 233.33%. Therefore, the percent increase is a) 233.33%.