Aplumber charges $100 to come to a house and $95 dollars per hour that he is there. if the total cost of the plumber’s visit to a house was $385, how many hours was the plumber working at the house?

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 .

Someone me what is the area of this figure? 18m 18m 8m 16m

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle