The investment at the end of a week will be less by $63.
The loss per day = $ 9
As per the fact, one week has seven days. So, the loss amount in a week = 9 × 7
Performing multiplication on Right Hand Side of the equation to find the value of lost amount in a week to find the lost amount in a week
The loss in amount in a week = $63
Thus, based on the rate of loss of money on investments, the change in his investment at the end of week will be $63 less than the original amount.
Learn more about multiplication -
https://brainly.com/question/10873737
#SPJ4
