If a 1 = 5 a 1 ​ =5 and a n = a n − 1 + 4 a n ​ =a n−1 ​ +4 then find the value of a 4 a 4 ​ .

The surface area would be 576 because you multiply all the numbers then multiply that number by 6

It's like discovering the answer to a puzzle. the purpose in solving an equation is to find the value or values of the variable that makes it a true statement. any value of the variable that makes the equation true is called a solution to the equation.