Zachary is standing in a stadium and has the option of running up a staircase or down a staircase for exercise. The function f(x)= 1/25(∣4x∣+2x) will determine how many calories Zachary will burn if he runs up x steps. Use a negative value for x if he runs down the stairs. What does the domain represent in this function?

R(All real numbers)

Step-by-step explanation:

We are given that the calories burn in x steps of running is given by

We have to find the domain of this function.

We know that

|x|=

    -x, x<0

Therefore, the function

The function is defined for all values of x.

Therefore, the domain of f(x)=All real numbers (R)

answer: -8.2562234e+13