What is the rate at 376 heart beats every 4 minutes

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 the following is correct interpretation of the expression -4+13

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28