Find the m∡EFG please help me

What ia the sum if the first 7 terms of the geometric series

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?

Find all the angles that satisfy the equation cos(θ)=32