Algebra B Exponential Decay

Identify the y-intercept (initial value) of the function f(x)=2(4)^x.

• 2

• 4

• (2)^x

• 8

Tags

CCSS.HSF-IF.C.7E

Use the function, M=.05(2)^t, where M is the amount of money you have after t days.
What is the y-intercept?

• (0, .05)

• (0,2)

• (0, .1)

• (0,0)

Tags

CCSS.HSF.LE.B.5

Identify each function as representing exponential growth or decay.
f(x) = 4(0.89)^x

• growth

• decay

Tags

CCSS.HSF-IF.C.8B

Is this exponential growth or decay?

• Growth

• Decay

Tags

CCSS.HSF-IF.C.8B

Which is an exponential function?

• y = mx + b

• y - y₁ = m(x - x₁)

• y = ab^x

Write an equation.

• y = (2)1^x

• y = (1)2^x

• y = (1)0.5^x

Tags

CCSS.HSF.LE.A.2

Write an equation

• y = (20)0.25^x

• y = (20)0.5^x

• y = (0.5)20^x

Tags

CCSS.HSF.LE.A.2

What is a, the initial amount, for the function: f(x) = 800(0.85)^x?

• 800

• 0.85

• 0.15

• x

Tags

CCSS.HSF.LE.B.5

In the equation t(n) = 150(1.2)ⁿ , what does 150 represent?

• the ending amount

• the starting amount

• the growth

Tags

CCSS.HSF.LE.B.5