What percent is represented by the shaded area?

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 .

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3