In the expression, there are 3 terms.
3x and 4x are like terms because the variables are identical.
Also, we have a constant term which is -3.
Step-by-step explanation:
Option A and B are the correct answer because it equal to 688.5 and 688.05
In 90 minutes it would travel for 1 hour because 90 minutes is 1 hour
hope this helps