The first day, Brian saw 31 birds and twice as many squirrels as birds. The
second day, Brian saw 20 birds and 42 squirrels. Which of the following is a
good estimation of how many birds and squirrels Brian saw in the two days?
A. 110 birds and squirrels
B. 150 birds and squirrels
C. 190 birds and squirrels
D. 230 birds and squirrels
E 270 birds and squirrels

What is the standard form of -5x^2+2x^4-11+x^3+3x

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

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.