Final answer:
To find the total time Isaac needs to complete his tasks, add the time for each task (d + g + f). Without actual values for d, g, and f, we only have a formula. With hypothetical values, a numeric total time can be calculated.
Step-by-step explanation:
To calculate the total time Isaac will take to complete all three tasks of walking his dog, watering the garden, and feeding his fish, you simply need to add the time taken for each individual task. If d represents the number of minutes it takes to walk his dog, g represents the number of minutes to water the garden, and f represents the number of minutes to feed his fish, the total time T in minutes is represented as:
T = d + g + f
Without the actual numbers provided for d, g, and f, we cannot calculate a numeric answer. However, the formula above provides the method to find the total time once the values are known.
For example, if it takes Isaac 10 minutes to walk his dog (d = 10), 5 minutes to water the garden (g = 5), and 3 minutes to feed his fish (f = 3), the total time T would be:
T = 10 + 5 + 3 = 18 minutes.