Plz help me get the right answer

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal

What is the perimeter of an equilateral triangle if each side is (x+3)?

The value, v, of kalani’s stock investments over a time period, x, can be determined using the equation v=750(0.80)^-x. what is the rate of increase or decrease associated with this account? 20% decrease 20% increase 25% decrease 25% increase