What is the horizontal distance between (-7.5, 3) and (2.5, 3)?

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species

Sketch one cycle if the cosine function y=2cos2theta

Find the value of x. round the length to the nearest tenth