# Math( help please ! )

posted by
**Poppy**
.

a) f(x) = 4.1x +92.16

b) f(x) = 17.9x + 19.36

c) f(x) = 8.8x + 55.4

ANSWERS: a) 4.8 b) 0.93 c) 2.2, i just have no clue how they got these answers

EXTRA INFO:

The demand function for a new product is p(x)= - 4x +42.5, where x is the quantity sold in thousands and p is the price in dollars. the company that manufactures the product is planning to buy a new machine for the plant. there are 3 diff. types of machines. the cost function for each machine is shown (ABOVE). Investigate the break even quantities for each machine.