Algebra 1 Expressions and Variables Quiz

An algebraic expression comprises both numbers and variables together with at least one arithmetic operation.

A variable is a letter that represents unspecified numbers.

To evaluate an algebraic expression, you have to substitute each variable with a number and perform the operations included.

<p>Substituting $x$ with 5, we get $4\cdot 5-3$. Performing the calculations, we get $20-3=17$.</p> Signup and view all the answers

<p>A power is an expression that represents repeated multiplication of the same factor.</p> Signup and view all the answers