Which is the best method to use? y = 6x - 11
-2x – 3y = -7

same thing , solve systems of equations by substitution

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?

What is the range of the data below? .8090100

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33