# +26 Thinking With Mathematical Models Answers Investigation 1

## Introduction

Mathematical models are powerful tools that allow us to understand and analyze complex phenomena in a systematic way. In this article, we will explore the answers to investigation 1 of the "Thinking with Mathematical Models" curriculum. We will delve into various mathematical concepts and their applications to real-life scenarios. Let's dive in!

## Understanding the Problem

### Defining the problem

The first step in any investigation is to clearly define the problem we are trying to solve. In investigation 1, we are presented with a situation where a company is selling a product and the demand for that product is influenced by various factors. Our goal is to develop a mathematical model that can predict the demand for the product based on these factors.

### Gathering data

In order to develop a mathematical model, we need data. The next step is to gather relevant information about the factors that influence the demand for the product. This may include historical sales data, market trends, customer surveys, and any other data that can provide insights into the problem at hand.

## Developing the Model

### Choosing a mathematical approach

Once we have gathered the necessary data, we need to decide on the mathematical approach we will use to model the problem. This may involve choosing between linear regression, exponential growth, or other mathematical techniques depending on the nature of the problem and the data available.

### Defining variables

Before we can start building our model, we need to define the variables that will be used. In investigation 1, these variables may include the price of the product, the marketing budget, the seasonality of demand, and any other relevant factors that influence the demand for the product.

### Formulating equations

With the variables defined, we can now formulate the equations that will describe the relationship between these variables and the demand for the product. This may involve using mathematical functions such as linear equations, exponential equations, or even more complex models depending on the complexity of the problem.

## Testing and Refining the Model

In order to validate our model and ensure its accuracy, we need to collect additional data to compare the model's predictions with the actual demand for the product. This can help us identify any discrepancies or areas where the model may need further refinement.

If our model does not accurately predict the demand for the product, we may need to adjust the parameters or variables in the model. This could involve tweaking the coefficients in a linear equation, adjusting the growth rate in an exponential model, or making any other necessary modifications to improve the model's accuracy.

### Evaluating model performance

Once we have refined our model, we need to evaluate its performance. This can be done by comparing the model's predictions with the actual demand for the product over a certain time period. If the model consistently produces accurate predictions, we can have confidence in its reliability and use it to make informed business decisions.

## Applying the Model

### Forecasting future demand

One of the main benefits of developing a mathematical model is the ability to forecast future demand for the product. By inputting different values for the variables in the model, we can predict how changes in price, marketing budget, or other factors will impact the demand for the product in the future. This information can be invaluable for business planning and decision-making.