Exponential Function vs Growth and Decay

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

• 800
• 0.85
• 0.15
• x

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

• 300
• 1.16
• .16
• x

Is the following exponential growth or decay?
 y = 7(5)^x

• Exponential Growth
• Exponential Decay

What is the y-intercept of the function?

• 2
• 3
• 1
• -2

Which equation matches the graph?

• y=2(2)^x
• y=2(1/2)^x
• y=2^x
• y=1/2(2)^x

In an exponential function, what does the 'a' represent? 

• SLOPE
• RATE OF CHANGE
• Y-INTERCEPT
• COMMON RATIO

Which color functions is exponential?

• Blue
• Green
• Red
• Yellow

What does the a in y=a(1+r)^x  represent?

• Time
• Rate
• Slope
• Initial Amount

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• y = 15(35)^x
• y = 15(1.35)^x
• y = 15(0.35)^x
• y = 35(1.15)^x

Is the pictured graph growth, decay, or linear or none?  

• Growth
• Decay
• Linear
• None