What is the difference between 2a + 5 and 2(a + 5)? Give an English expression to describe each of
them. Describe how the brackets change the meaning.

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?

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.