Which of these best describes π? a)The ratio of the radius of a circle to its diameter
b)The radius of a circle times 3.14
c)The ratio of the circumference of a circle to its diameter
d)The ratio of the diameter of a circle to its radius

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 statements about these triangles is true

We just started the introduction into circles and i have no idea how to do this.