Unit 4 Checkpoint Review

Front

What is the solution to the inequality -2x + 10 > -4?

Back

x < 7

Front

If Prince paid $20.00 and $5.00, receiving $3.67 in change and paid $1.62 in taxes, what was the cost for one pound of sliced fruit before taxes?

Back

$4.38

Front

What is the percent reduction when the price of a coffee maker goes from $25 to $20?

Back

20%

Front

What equation represents the total cost of a holiday meal for x people, where each person costs $12.50 and there is a $30 delivery fee?

Back

y = 30 + 12.50x

Front

What equation represents the amount Joe has in his savings account after x months if he starts with $150 and saves $40 per month?

Back

y = 40x + 150

Front

Define an inequality.

Back

An inequality is a mathematical statement that indicates one quantity is larger or smaller than another, using symbols like >, <, ≥, or ≤.

Front

What does it mean to solve an inequality?

Back

To solve an inequality means to find all values of the variable that make the inequality true.

Front

What is the formula for calculating percent change?

Back

Percent Change = (New Value - Old Value) / Old Value × 100%.

Front

How do you calculate the total cost including tax?

Back

Total Cost = Price + (Price × Tax Rate).

Front

What is a linear equation?

Back

A linear equation is an equation that makes a straight line when graphed, typically in the form y = mx + b.