Aladder 20 feet long leans against the side of a house. find the height from the top of the ladder to the ground if the angle of elevation of the ladder is 80.

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Amir wants to proportionally increase the size of a photo to create a poster for his room. the size of the original photo is shown. complete the statement and then answer the question to represent ways that amir can increase the size of his photo.