Lisa paid $43.95 for 16.1 gallons of gasoline. what was the cost per gallon, rounded to the nearest hundredth?

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 .

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Identify the number as a rational or irrational.explain. 127