Sequences, Series, and Exponential Functions

Evaluate the arithmetic series described:
2 + (-2) + (-6) + (-10)..., S₁₀

• -160
• -328
• -320
• -336

• 3

• -2

• 2

Find the sum of the n terms when

a₁=4 , r = -5 and n = 4

• 416

• -416

• 775

• -775

• 205

• 19.5

• 108.75

• Does Not Exist

The sum of the terms in a sequence is known as a Series.

• True

• False

Evaluate the infinite geometric series:

3 - 2 + 4/3 - 8/9 + ...

• 5/4

• 9/5

• 5/6

• 65/27

What type of function is f(x)=2(1/7)^x ?

• Exponential Growth
• Linear
• Exponential Decay
• None of the Above

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

The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the exponential equation?

• y=8(15,000)^x
• y=15,000(1 + .08)^x
• y=15,000(1 - .08)^x
• y=15,000(0.08)^x

• Shifted up 5

• Shifted down 5

• Reflection over the x-axis

• Reflection over the y-axis