Nas igualdades de pares ordenados, determinar os elementos desconhecidos:

(4x; 18)= (20; 6y)​

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

Which of those sequences is a geometric sequence

What is the radical expression that is equivalent to the expression 27 1 over 5?