4. A corporation earned a profit of $2.5 × 10^4 for 1 × 10^3 days in a row.
What was the corporation’s total profit during this time period?
To calculate the total profit during this time period, we need to multiply the profit earned per day by the number of days.
Profit per day = $2.5 × 10^4
Number of days = 1 × 10^3
Total profit = Profit per day x Number of days
Total profit = ($2.5 × 10^4) * (1 × 10^3)
Total profit = $2.5 × 10^4+3
Total profit = $2.5 × 10^7
Total profit = $25,000,000
Therefore, the corporation's total profit during this time period was $25,000,000.