If f(x) = 5x-7 and g(x)= x-8 what is (f g)(9)

What is the radius of the cone in the diagram? round your answer to the nearest whole number

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes. she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?