Question

6.Kelly has been training to run across the country. On the first day, she ran 4 miles, the

second day, she ran 12 miles, and the third day, she ran 36 miles.
a) Write an equation that models Kelly's situation?

Answer 1

D= d₁ + d₂ + d₃ : where D is total distance covered in the training.

Explanation:

Let this equation model the total distance covered in the training.

Let the total distance covered in the training to be: -------D

Let the distance covered in 1st day be ----------d₁ = 4 miles

Let the distance covered in 2nd day be ----------d₂= 12 miles

Let the distance covered in 3rd day be ----------d₃ = 36 miles

D= d₁ + d₂ + d₃

D= 4 + 12 + 36

D= 52 miles