Grace hopper in our very first module, we looked at numeration systems and the different bases that various cultures used. the babylonian system was base 60; the mayan system was base 20 (almost); and our hindu-arabic system is base 10. you read in the grace hopper biography that computers use a base 2 system. in base 2, only two symbols are used, so all numbers are represented with 0s and 1s.

a) change the number 100 (base ten) to a numeral in base two.
b) change the number 1010101 (base two) to a numeral in base ten.

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Question 5 of 10 2 points if a population is a sample of the population could be a. registered voters; all citizens o o b. baptists; all religious people o c. people who purchased shoes; all customers o d. the entire school faculty; math teachers

(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.