The question is an illustration of inequalities.
The inequality that represents Lashonda's amount of exercise is: 
The given parameter is:

In inequality, at least means <em>greater than or equal to</em>.
So, the above equation becomes:

From the question, we understand that the number of minutes should be represented with t.
So, we have:

Hence, the inequality is: 
Read more about inequalities at:
brainly.com/question/15137133