15.80 * 1.05 should give you the answer
A method to solve it would be would be:
First converting 5% to a decimal then multiplying that by 15.80 in order the find 5 percent of 15.80...Afterwards you have to add that value to the original 15.80 ..And you should end up with the same answer.
The ratio is 13 males and 12 females or 13:12
These angles are same side interior angles. They add up to 180 degrees
Total number of rows does Brenda's vegetable garden has 
Total number of plants in each row 
Total number of rows Brenda wants to plant peppers 
Total number of rows left to plant tomatoes 
Since, total number of plants that can be planted in each row
Therefore, number of tomato plants that Brenda will plant are 
Interesting question... let's draw a picture.
50 m ----------
\ ----------------------------- \
75 m down \ / 60 m up 45 m down ------
---------
So what's going on?
Going 75 m deeper: 50 + 75
Coming up 60 m : 50 + 75 - 60
Going 45 m deeper: 50 + 75 - 60 + 45
Final depth: 110 m
