Rearrange w= 3(2a + b) - 4 to make a the subject

What's the difference between: x≥0 and nonnegative integer. ?

Aiden drives to school and back each day. the school is 16 miles from his home. he averages 40 miles per hour on his way to school. if his trip takes 1 hour, at approximately what speed does aiden drive home?

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units