8th Gr Final Review #3 - Ch 3 Equations

Front

What is the equation to find out how many weeks Sophie needs to save to buy a jacket if she has $14 and saves $5 each week until she has $64?

Back

5x + 14 = 64

Front

What is the expression for revenue when selling Whats-Its for $12 each?

Back

12x

Front

True or False: To solve the equation g/8 - 6 = -12, you would add 6 to each side then multiply by 8 on each side.

Back

True

Front

What is the solution to the equation 9 + 2q = -1?

Back

-5

Front

What equation represents how much money Norachai had before buying a salad if he paid $5.12 and had $27.10 left?

Back

n - $5.12 = $27.10

Front

What does the variable 'x' typically represent in an equation?

Back

A quantity that is unknown and needs to be solved.

Front

What is a linear equation?

Back

An equation that makes a straight line when graphed, typically in the form y = mx + b.

Front

What does 'breakeven' mean in a business context?

Back

The point at which total revenue equals total costs, resulting in no profit or loss.

Front

How do you isolate a variable in an equation?

Back

By performing inverse operations to both sides of the equation.

Front

What is the first step to solve the equation 3x + 5 = 20?

Back

Subtract 5 from both sides.