Based on the data collected from 23 flights, what is the probability of at least one O-ring failing, regardless of temperature? (Note: This probability is called an experimental probability because it's based on only 23 flights, which is a fairly small number of events. To get a
better approximation of the actual probability, we would need data from many more flights. Note also that even though there was O-ring failure
on seven flights, all of those shuttles returned safely.)

Which equation shows the variable terms isolated on one side and the constant terms isolated on the other side for the equation -1/2x+3=4-1/4x? a. -1/4x=1 b. -3/4x=1 c. 7=1/4x d. 7=3/4x

(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.

Calculate the annual effective interest rate of a 12 % nominal annual interest rate compound monthly