"5 more than 3 times a number" translates to an equation is it true or false ?

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Ahiking trail is 6 miles long. it has 4 exercise stations, spaced evenly along the trail. what is the distance between each exercise station?

The area of a rectangle is 54x^9y^8 square yards. if the length of the rectangle is 6x^3y^4 yards, which expression represents the width of the rectangle in yards