CIS Ch.2 Test Review #3

Front

What is the formula to calculate total pay when a salary and commission are involved?

Back

Total Pay = Salary + (Commission Rate * Sales)

Front

How do you write an inequality to represent a situation where total pay must meet or exceed a certain amount?

Back

Use the format: Commission Rate * Sales + Salary ≥ Desired Total Pay.

Front

What is the first step in solving a linear equation like -5 - 7y = -20y + 34?

Back

Combine like terms to isolate the variable.

Front

What is a system of equations?

Back

A set of two or more equations with the same variables that can be solved together.

Front

How do you determine the number of dimes and quarters if you know the total number of coins and their total value?

Back

Set up a system of equations based on the number of coins and their total value.

Front

What is linear regression?

Back

A statistical method used to model the relationship between a dependent variable and one or more independent variables.

Front

How do you write a linear regression equation from a set of data?

Back

Use the formula y = mx + b, where m is the slope and b is the y-intercept.

Front

What does it mean to round coefficients to the nearest hundredth?

Back

It means to round the number to two decimal places.

Front

How can you estimate future values using a linear regression equation?

Back

Substitute the desired x value into the regression equation to find the corresponding y value.

Front

What is the significance of the x variable in a linear regression equation related to time?

Back

It typically represents the number of years since a specific starting point.