Which is the coefficient of the variable in the expression 2-5x-4+8?

Roger and natalie travel in similar cars. roger's car drives the two miles to school in 7.5 minutes. natalie drives the same distance in the opposite direction but in only 6.5 minutes. what is true of their velocities?

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

What are the solutions of the equation? z^2 + 11z + 24 = 0 a. 8, -3 b. 8, 3 c. -8, -3 d. -8, 3