B. $8000 - 1/4= b if you need any other help on math just message me and ill try my best to help, if you dont want to feel free to keep doing what your doing
B. Decreases
(Hopefully I’m right!)
Answer:
≥ 420 boards
Step-by-step explanation:
Write the required relation between cost per board and "x" (the number of boards that must be sold).
143 + 30240/x ≤ 215 . . . . . . . note that the first term is <em>not</em> 143x
Subtract 143
30240/x ≤ 72
Multiply by x/72. This is a positive number because x is a positive number.
30240/72 ≤ x
420 ≤ x
At least 420 surfboards must be sold to limit the final cost per board to $215.
Since the formula for the perimeter of a square is 4s then
4s=28
s=7
Now the area of square is s^2=a
(7)^2=a
49=a