evaluating functions

Evaluate f(x) = x² for f(-8)

• 64
• -64
• -16
• 16

Evaluate f(x)=-2t²+ 1 for f(-3)

• 19
  
• 37
• -17
• -11

Evaluate f(x)=-2t²+ 1 for f(2)

• 9
  
• 17
• -17
• -7

Given 
f(x)= 2x² + 5x - 17, find f(-1). 

• f(-1) = -20
• f(-1) = -24

f(x)=-x+3

f(7)=?

• -4

• -6

• 10

• 4

g(x)=-4x-5; Find g(3x)

• 7

• -12x-5

• 12x-5

• 12x²-5

k(a)=a³+4a; Find k(a+2)

• a³+4a+16

• a³+8

• a³+6a²+16a+16

• a³+6a²+12a+8

w(x)=4x-5; Find w(x-1)

• 4x-9

• 4x-4

• 4x²-6

• -9

w(x)=x²-2; Find w(4x)

• 4x³-2

• 14

• 16x-2

• 16x²-2

g(a)=2a+4; Find g(-4-a)

• 8-2a

• -4-2a

• 2a

• 2a²+4