No I do not know how to do this
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.
The answer is .005 because five out of one thousand need to be replaced.
We plug the x value (-4) and y (2) into this equation to check.
3(2) - 2(-4) = 14. Let's see if this works. 6 + 8 = 14, 14 = 14. Yes, that is a solution.
Answer:
A data represent an exponential function because there is a common ratio of 1
