13. a. compute 2 in z . b. does your answer to part a allow you to conclude that 231 is prime? explain your reasoning. c. is 231 a carmichael number? justify your answer.

Adaycare center charges a $75 enrollment fee plus $100 per week. which of the following represents the cost of sending a child to daycare for 14 weeks?

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.

|p| > 3 {-3, 3} {p|-3 < p < 3} {p|p < -3 or p > 3}