For the following exercises, identity the conic with a focus at the origin, and then give the directrix and eccentricity.
15. r ( 3 + 5 sin θ ) = 11
College Algebra By Openstax
College Algebra with Modeling & Visualization (6th Edition)
Elementary and Intermediate Algebra: Concepts and Applications (7th Edition)
Intermediate Algebra (7th Edition)
Introductory and Intermediate Algebra for College Students (5th Edition)
A Graphical Approach to College Algebra (6th Edition)
College Algebra in Context with Applications for the Managerial, Life, and Social Sciences (5th Edition)