Topic 4 Review

Front

What is the value of the expression 5b - 3d when b = 4 and d = 7?

Back

-1

Front

What is the value of the expression 3a - 5b + 7 when a = 4 and b = 1?

Back

14

Front

What expression represents the total price of a pounds of apples, o pounds of oranges, and c pounds of cherries if apples cost $1.99 per pound, oranges $0.89 per pound, and cherries $3.49 per pound?

Back

1.99a + 0.89o + 3.49c

Front

Simplify the expression 3(5) + 3(y + 2).

Back

3y + 21

Front

Evaluate the expression 7p + 2q when p = 3 and q = -5.

Back

11

Front

What is a variable in mathematics?

Back

A symbol used to represent an unknown value.

Front

What is an expression in mathematics?

Back

A combination of numbers, variables, and operators without an equality sign.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of the expression by substituting variables with numbers.

Front

What is the distributive property?

Back

a(b + c) = ab + ac, distributing a across the sum.

Front

What is the difference between an equation and an expression?

Back

An equation has an equality sign, while an expression does not.