ACT Practice

Front

What is the formula for calculating the value of an expression raised to a power?

Back

The formula for calculating the value of an expression raised to a power is (a-b)³ = a³ - 3a²b + 3ab² - b³.

Front

How do you calculate the percentage of a total?

Back

To calculate the percentage of a total, use the formula: (part/whole) × 100.

Front

What is the formula for finding the total number of students not in a specific category?

Back

Total students not in a specific category = Total students - Students in that category.

Front

How do you solve a linear equation for a specific variable?

Back

To solve a linear equation for a specific variable, isolate the variable on one side of the equation using algebraic operations.

Front

What is the relationship between the coefficients in a linear equation?

Back

In a linear equation of the form ax + by = c, 'a' and 'b' are the coefficients that determine the slope and intercept of the line.

Front

How do you calculate the cost per item when given a bulk price?

Back

To calculate the cost per item, divide the total price by the number of items.

Front

What is the minimum score needed to achieve a certain percentage on a test?

Back

Minimum score = (desired percentage/100) × total points possible.

Front

What is the significance of understanding percentages in real-life applications?

Back

Understanding percentages is crucial for making informed decisions in finance, statistics, and everyday situations.

Front

How do you evaluate an expression with given variable values?

Back

To evaluate an expression, substitute the given values for the variables and perform the arithmetic operations.

Front

What is the concept of a linear relationship in mathematics?

Back

A linear relationship is a relationship that can be graphically represented as a straight line, defined by a linear equation.