Need help ASAP!!

1. (-5)(6)(-7) =...

2. On Monday Luke’s business lost $15. On Tuesday it made $8. On Wednesday it broke even. What is the total profit of loss during those 3 days?

3. If a^2>20 then which of the following could be a value of a? Circle all that apply.
A. 6 b. 3 c. (-8) d. 2

4. Bees are leaving their hive at a rate of 10 per hour and they are reentering the hive at a rate of 6 per hour. If the hive starts with 100 bees, how long will it take before the hive is empty?

Thanks in advance! Have a wonderful day! Please provide steps if possible =)