Which statement best describes how to determine whether f(x)=9-4x^2 is an odd function?
a. determine whether 9-4(-x)^2 is equivalent to 9-4x^2
b. determine whether 9-4(-x^2) is equivalent to 9+4^2
c. determine whether 9-4(-x)^2 is equivalent to -(9-4x^2)
d. determine whether 9-4(-x^2) is equivalent to -(9+4x^2)

Find the value of the cosine for angle a

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?

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years