Answer:

Step-by-step explanation:
Given

Required
Add
The statement can be interpreted as:

Take LCM

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.
Answer:
x<-4 i hope i help plz mark me brailist
Answer: 2.375 per book
Step-by-step explanation:
Answer:
25.12
Step-by-step explanation:
just use circumstance