1.2.1 Algebra 1 Quiz

An unknown or changeable quantity is a _____.

• factor

• variable

Parts of an algebraic expression separated by plus (+) or minus (–) signs are _____.

• terms

• coefficients

Which phrase describes an unknown or changeable quantity?

• 2 times the number of pages in the book

• 60 seconds multiplied by 5

Which algebraic expression represents this phrase?

the product of 86 and the depth of the river

• 86 • d

• 86 + d

• 86 – d

If b = the number of blue bikes, which algebraic expression represents the phrase below?

the sum of the number of blue bikes and the 9 red bikes

• b + 9

• b – 9

• b • 9

If p = the number of plates on the table, which algebraic expression represents the phrase below?

the number of plates on the table minus the 4 saved for dessert

• p – 4

• p + 4

Simplify this algebraic expression.

• x – 9

• x – 3

• x + 9

Kelly has $25 in her purse, and Dante has d dollars in his wallet.

Which algebraic expression represents the total amount that Kelly and Dante have?

• d – 25

• 25 + d

The original price of a computer was reduced by $250.

If p = the computer's original price in dollars, which algebraic expression represents the reduced price?

• p – 250

• 250p

Evaluate this exponential expression.

3 • (5 + 4)² – 4² =

• 15

• 46

• 227