To find the net change in the company’s stock price over the four days, we need to sum up the changes for each day:

1. Day 1: increased by $3.50 → $+3.50$
2. Day 2: decreased by $3.70 → $-3.70$
3. Day 3: increased by $3.30 → $+3.30$
4. Day 4: decreased by $3.40 → $-3.40$

Now, let's add these changes together:

$\text{Net Change} = 3.50 - 3.70 + 3.30 - 3.40$

Calculating this step-by-step:

$3.50 - 3.70 = -0.20$ $-0.20 + 3.30 = 3.10$ $3.10 - 3.40 = -0.30$

The net change in the company’s stock price over the four days is $-0.30$ dollars.

Would you like more details or have any questions?

Here are five related questions:

1. How would you calculate the average daily change in stock price?
2. What is the importance of understanding net change in stock prices?
3. If the stock had a 5th day with an increase of $0.50, what would the new net change be?
4. How can you represent this data on a line graph?
5. What is the percentage change in stock price if the initial price was $100?

Tip: When summing up changes in stock prices, remember that increases are positive and decreases are negative, so they offset each other when calculating the net change.