Aplastering contractor charges $18 per square yard( that is $2 per square foot). what is the cost of plastering 100 feet of wall in a house with an 8 foot ceiling

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 .

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12