A.1 - Translating & Evaluating Expressions

Write an algebraic expression for "the difference of eighteen and a number".

Six less than twice a number.

A number squared increased by 1

SOL Question: Travis would like to buy some toys to donate to charity. He plans to buy 9 dolls at "d" dollars and 2 toy cars at "c" dollars each, and 3 train sets at "t" dollars each. Which expression represents the total cost, in dollars, or these items that Travis wants to buy?

SOL Question: Which expression represents four less than half a number, n?

SOL Question: What is the value of the expression with $$x=\frac{2}{3}$$  ?

$$x^2+3x-2$$  

SOL Question: What is the value of this expression when $$n=-15$$  ?

$$-2\left|n+6\right|$$  

How do you feel about these two topics?