PLEASE HELP SOMEONE WITH THIS MATH I AM NOT VERY GOOD AT MATH SO PLEASE HELP ME THIS IS DUE SOON HELP PWEASE, THNAK YOU FOR WHOEVER HELP ME

Z4=289 there should be 4 answers total 2 whole numbers and either 2square root or imaginary number answers

What value of x is in the solution set of –5x – 15 > 10 + 20x?

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 .