Exponential Growth and Decay

Front

Write an equation that models the following situation:
Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

Back

y=6(1.14)^x

Front

Classify the model: A=1200(.85)⁶ as Exponential GROWTH or DECAY.

Back

Decay

Front

What is a, the initial amount, for the function: f(x) = 300(1.16)^x?

Back

300

Front

A 78 gram sample of Uranium loses half of its mass each year. What is the exponential equation? Options: y=78(0.5)^x, y=78(1.5)^x, y=78(2)^x

Back

y=78(0.5)^x

Front

Equation for bacteria culture starting with 5000 cells, dying by 30% each year.

Back

y=5000(0.7)^x

Front

Is this exponential growth or decay? Options: Growth, Decay, Linear

Back

Growth

Front

Function with initial amount $15 and 35% increase each year: y = 15(35)^x, y = 15(1.35)^x, y = 15(0.35)^x, y = 35(1.15)^x

Back

y = 15(1.35)^x

Front

Is this exponential growth or decay?

Back

Decay

Front

Is the pictured graph growth, decay, or linear or none? Options: Exponential Growth, Exponential Decay, Linear, None

Back

Exponential Growth

Front

Is this exponential growth or decay?

Back

Decay