Which expression is equivalent to n-4n- 3(2n + 1)?

A. -9n + 3
B. -9n + 1
C. -9n-3
D. -6n-3

Need the answers fast pl

Were only 64 seats. the remaining 6 students had to travel in a separate van. the equation 2b + 6 = 70 represents the given scenario. what does b represent? the number of buses the number of vans the number of students who rode on each bus the total number of students going to the football game