Write an expression in simplest form that represents the total amount in each situation? You bought 5 binders that each cost b dollars, a calculator for $45, and a set of pencils for $30.

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?