Layla was out at a restaurant for dinner when the bill came. Her dinner came to 9$. After adding in a tip, before tax, she paid 10.80$. Find the percent Tip

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Find the cosine function that is represented in the graph.

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.