All those are R related questions

I resolved Task1 But I need help about Task2..

Also may I get some comment for each programming orders.

1. From the mtcars dataset, find the unique values of the gear variable. Print.

2. Use a for loop to find the average hp for each unique gear. Show code and output.

3. Which number of gears is associated with the highest horse power hp? State in a complete sentence.

4. Which cars have 5 forward gears? State in a complete sentence.

1. Use tapply to find the average hp for each unique number of forward gears (gear). Show code and output.

2. Create a dataframe with two columns. One column should be unique gear. One column should be average hp

3. Compare to the answer for Task 1.2. Are they the same? Which approach is more efficient? Explain.