Will somebody answer this question? i'm stuck and in a bit of a hurry. a surfboard shaper has to limit the cost of development and production to $ 215 per surfboard. he has already spent $ 30,240 on equipment for the boards. the development and production costs are $ 143 per board. the cost per board is 143x+30,240/x dollars. determine the number of boards that must be sold to limit the final cost per board to $ 215.

  ≥ 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 not 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: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.