SF7 Unit 4 Flashcard Review

Front

What is the solution to the equation: 2x + 2.5 = 5.9?

Back

x = 1.7

Front

What is the solution to the equation: 5(x - 3) = 35?

Back

x = 10

Front

What equation models the situation: Mr. Fitzpatrick paid $425 for concrete at $50 per yard with a $75 delivery fee?

Back

50y + 75 = 425

Front

Simplify the expression: -\frac{1}{4}(-16 - 8x + 4y) = ?

Back

4 + 2x - y

Front

If Speedy Boat Rental charges a $15 deposit and $2 per hour, how many hours did they rent the boat for if the total cost was $33?

Back

9 hours

Front

What is the definition of a variable in mathematics?

Back

A symbol used to represent an unknown value.

Front

What does it mean to simplify an expression?

Back

To reduce it to its simplest form by combining like terms.

Front

What is the distributive property?

Back

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

Front

What is the purpose of solving equations?

Back

To find the value of the variable that makes the equation true.

Front

What is a linear equation?

Back

An equation that makes a straight line when graphed.