Topic 4 Review (Expressions)

Front

What expression represents the final price of an item that costs c dollars after a 30% discount?

Back

0.70c or 0.7c or .7c

Front

If Lauren drove 6x - 12 miles on Friday and 8x - 15 miles on Saturday, what is the expression for the difference in miles driven?

Back

2x - 3

Front

Back

-\frac{5}{3}w + \frac{4}{7} or -\frac{5}{3}(w) + \frac{4}{7}

Front

What is the area of the backyard not taken up by a patio with dimensions (2+r) inches by 8 inches, if the total area is (15r + 29) inches squared?

Back

7r + 13

Front

How many ounces are in a container after pouring in cereal at a rate of 3.15 ounces per second for 6 seconds, starting with 10.3 ounces?

Back

29.2 ounces

Front

What is the formula to calculate the area of a rectangle?

Back

Area = length × width

Front

What does it mean to simplify an expression?

Back

To reduce it to its simplest form by combining like terms and eliminating unnecessary parentheses.

Front

What is a variable in algebra?

Back

A symbol, often a letter, that represents a number in mathematical expressions or equations.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.

Front

What is the distributive property in algebra?

Back

a(b + c) = ab + ac, meaning you multiply a term by each term inside the parentheses.