Exercises

Answers

295.

a. yes

b. \{-3,-2,-1,0,1,2,3\}

c. \{9,4,1,0\}


297.

a. yes

b. \{-3,-2,-1,0,1,2,3\}

c. \{0,1,8,27\}


299.

a. yes

b. \{-3,-2,-1,0,1,2,3\}

c. \{0,1,2,3\}


301.

a. no

b. {Jenny, R and y, Dennis, Emily, Raul}

c. {RHern and ez@state.edu, JKim@gmail.com, Raul@gmail.com, ESmith@state.edu, DBroen@aol.com, jenny@aol.cvom, R and y@gmail.com}


303. 

a. yes

b. yes

c. no


305.

a. yes

b. no

c. yes


307.

a. f(2)=7

b. f(-1)=-8

c. f(a)=5 a-3


309. 

a. f(2)=-6

b. f(-1)=6

c. f(a)=-4 a+2


311.

a. f(2)=5

b. f(-1)=5

c. f(a)=a^{2}-a+3


313.

a. \text { (a) } f(2)=9

b. f(-1)=6

c. f(a)=2 a^{2}-a+3


315.

a. g\left(h^{2}\right)=2 h^{2}+1

b. g(x+2)=2 x+5

c. g(x)+g(2)=2 x+6


317.

a. g\left(h^{2}\right)=-3 h^{2}-2

b. g(x+2)=1-x

c. g(x)+g(2)=4-x


319.

a. g\left(h^{2}\right)=3-h^{2}

b. g(x+2)=1-x

c. g(x)+g(2)=4-x


321. 2


323. 6


325. 22


327. 4