operations on functions

f(x) = 3x² + 7x and g(x) = 2x² - x - 1, find (f - g)(x).

• x² + 8x + 1
• x² + 6x - 1
• 5x² + 8x - 1
• x² + 8x -1

Tags

CCSS.HSA.APR.A.1

Given f(x) = 3x² - 2x + 1 and g(x) = x - 4, find (fg)(x). 

• 3x³ - 10x² - 7x - 4
• 3x³ - 14x² + 9x - 4
• 3x² - x - 3
• 3x³ + 14x² - 9x - 4

What is g(f(1))?

• -1/2
• -2
• 1
• DNE

Tags

CCSS.HSF-BF.A.1C

What is g(f(2))?

• undefined
• -2
• 1
• -1/2

Tags

CCSS.HSF-BF.A.1C

What is f(g(2))?

• 1/2
• -3
• 0
• (2x-4)(1/x)(2)

Tags

CCSS.HSF-BF.A.1C

What is g(f(x))?

• (2x-4)/x
• 1/(2x-4)
• (2/x)-4
• DNE

Tags

CCSS.HSF-BF.A.1C

What is (fg)(x)?

• (2x-4)/x
• 1/(2x-4)
• (2/x)-4
• DNE

Tags

CCSS.HSF-BF.A.1B

What is (f+g)(-1)?

• -6
• -1
• -7
• 6

Tags

CCSS.HSF-BF.A.1B

What is (g/f)(-1)?

• -6
• -1
• 1/6
• 6

Tags

CCSS.HSF-BF.A.1B

What is (g/f)(x)?

• (2x-4)/x
• 1/(2x²-4x)
• x/(2x-4)
• (2x-4)(x)

Tags

CCSS.HSF-BF.A.1B