The expression 21 + 0.5n describes the length in inches of a baby n months old. How long is the baby at 6 months

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.

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 2: 1? submit