Profit P(x), is the difference between revenue, R(x), and cost, C(), so P(x) R(x) - C(x). Which expression represents P(x), if R(x) = 2x4 - 3x3 + 2x – 1 and C(x) = 24 - 22 + 2x + 3?
2 - 3,03 + x2 - 4
236 - 373 + x2 - 4
.24 - 3.03 - ? + 40 + 2
3.34 - 3.73 – 3,2 + 4x + 2

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500