1. Which expression represents the following calculation?"Add 4 and 6, then multiply 5,then add 10.

2.Write an algebraic expression for: 9 times the sum of 9b and 2.

3.What is the coefficient in the expression 40a-61=17?

4. Write the algebraic expression into words.
4/5(9+r)+8w.

5.What is the quotient in the expression c=45/d?