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.
6y - 1 = 34 - y
7y -1 = 34
7y = 35
y = 5
Answer:
x= 10
Step-by-step explanation:
Check the picture below.
is simply a 9x9 square, so its perimeter is simply 4*9.
6.7-2.3= 4.4 is the answer to the problem
