An archer shoots an arrow into the air such that its height at any time, t, is given by the function . If the maximum height of the arrow occurs at 4 seconds after it is launched, what is the value of k?

Victor is concerned about his constant impulsive tendencies. he thinks something must be wrong with him. what is a healthy action victor could take? take some of his friend's add medication to see if it . follow what his friend tells him he needs to do to solve his feelings. listen to a mental health professional who can guide him through his troubles. diagnose himself and take some natural supplements.