How many inches did the height of the plant increase between weeks 3 and 4

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Aof 12 , we to a of 4 to on a .of 4 be ?

Given: ab ≅ bc and ao ≅ oc ok − angle bisector of ∠boc find: m∠aok