Section 3.2Writing Expressions 121The length of Interstate 90 from the West Coast to the East Coast is 153.5 miles more than 2 times the length of Interstate 15 from southern California to northern Montana. Let mbe the length of Interstate 15. Which expression can you use to represent the length of Interstate 90?
.EXAMPLEWriting an Algebraic Expression3
You plant a cypress tree that is 10 inches tall. Each year, its height increases by 15 inches.a. Make a table that shows the height of the tree for 4 years. Then write an expression for the height after tyears.b. What is the height after 9 years?
7. Your friend has 5 more than twice as many game tokens as your sister. Let tbe the number of game tokens your sister has. Write an expression for the number of game tokens your friend has.