What is the coefficient of x in the expansion of (x+3)^3 . With full working​

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

Ken leaves work 20 minutes late. he decides to make up time by taking the toll road instead of side streets. he can travel three times faster by taking the toll road. create an equation to represent his total travel time, including wait time, where x is the number of minutes the drive was expected to take