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?

15 points ! ~ see if you know the answer to both you!

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

Scott’s bank account showed a balance of $750 on sunday. during the next five days, he made one deposit of $140 and numerous withdrawals of $180 each. let x represent the number of withdrawals that scott made. write an inequality that can be used to find the maximum number of withdrawals that scott could have made and maintain a balance of at least $100. do not use a dollar sign ($) in your response.