Solve 8^2=b(b+12). The formula is a^2=b(b+c). a=8 b=b c=12

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 .

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.