1.if f(x) = 2x2 − 30, find f(4).
a.35
b.−14
c.2
d.17
2.if f(x) is the total number of bacteria present in a sample after x hours, which of the following statements best describes the meaning of f(2) = 12?
a. the total number of bacteria present in the sample after 12 hours is 2.
b. the total number of bacteria present in the sample after 6 hours is 2.
c. the total number of bacteria present in the sample after 2 hours is 12.
d. the total number of bacteria present in the sample after 6 hours is 12.
3.if h(x) = −3x − 10, find h(−3).
a. −19
b.−1
c.1
d.2.3
4.choose the equation of the vertical line passing through the point (−4, 2).
a. y = −4
b. x = −4
c. y = 2
d. x = 2

(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.