GMAS review: Exponential functions

Which is the BEST estimate of the average rate of change for the function graphed, over the interval 1 ≤ x ≤ 3?

• 
  

• -2

• -3

• -4

• -6

• -15

• -16

• -30

• -32

Which function is graphed on the left?

• 
• 
• 
• 

• horizontal asymptote

  y = 0

• Graph represents growth.

• as x → ∞ y → −∞
  as x → −∞ y → 0

• as x → ∞ y → ∞
  as x → −∞ y → 0

• as x → −∞ y → ∞
  as x → ∞ y → 0

• as x → −∞ y → −∞
  as x → ∞ y → 0

• -32

• -8

• 32

• 8

Choose the correct formula for the function g.