The scale of a model train is 1 inch to 13.5 feet . One of the cars of the model train is 5 inches long . What is the length, in feet, of the actual train car

Is fgh ~ jkl? if so, identify the similarity postulate or theorem that applies.

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)