The way it is written, none of them.

The "a"s cancel out.
Find the measure of the third angle
Use your trig functions the get the sides
Then calculate area and perimeter
3 7/8 Converted into decimal equals 3.875
7/8 = 0.875 + 3
Answer:
Substitute the numbers below x by x in the equation given in the middle of the table and that will be the answer for y.
Step-by-step explanation:
For example, x= -1
y= x + 6
y= -1 + 6
y= 5
The pong will be at 3.5 m