Lesson 3.1 & 3.2

Solve:
16^x-3 = 8^x-3

• 9
• -3
• 0
• 3

81^3-x = (1/3)^5x-6

• 6
• -6
• 9/2
• 3/2

Which graph is an exponential function?

• red

• blue

• green

• none

Match the graph with its equation

• y = log₆(-x) + 1
• y = log₆(x − 2) + 1
• y = log₆(x + 2) - 1
• y = log(x-8) + 1

Rewrite log₂8 = 3 in exponential form.

• 2⁸ = 3
• 2³ = 8
• 3² = 8
• 8³ = 2

Evaluate.
log₃81

• 4
• ¹/₄
• -4
• -¹/₄

log₅(4x-7)=log₅(x+5)

• 3
• 12
• 4
• 7

log₂(x² - 6) = log₂(2x+2)

• 4, -2

• No Solution

• 4

• -2

Shawn is buying a new Jet Ski for $12,500. He is considering two credit options. Option A offers  a 6 year loan with 8.5% interest compounded quarterly, while Option B offers a 5 year loan with 10% interest compounded annually. Which is the better option and how much will he save?

• B; $573.83                  do something crazy
• B; $495.21                 get on the news
• A; $573.83                 get attention
• A; $495.21             raise money for charity

You invest $1600 at an annual interest rate of 4.6% compounded continuously. How much will you have in the account after 4 years.

• $1,923.23

• $10,138.07

• $6,701.28

• $800.26