The sum of eight times a number and negative four exceeds twelve

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?

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left