Exponents and Exponential Functions Review Algebra

Agnes purchases a ring for $200 and it depreciates 6% per year from the date of purchase. Which function models the value V(t) of the ring?

• V(t)=200(1.6)^t

• V(t)=1.06x+200

• V(t)=200(.06)^t

• V(t)=200(.94)^t

Which option is exponential growth?

• Option 1

• Option 2

The equation  y = 75(1.2)^x describes the number of staff since 1998.
What 'x' would you use if you wanted to calculate the number of staff in 2005?

• x = 2005

• x = 7

• x = 5

• x = 1998

USE THE CALCULATOR:
The equation  y = 75(1.2)^x describes the number of staff since 1998. 
What is an approximate number of staff in the year 2005?

• 269

• 187

Which equation shows
"The cell population of 200 is growing by 20 percent each hour"?

• P(h) = 200 (.20)^h

• P(h) = 200 (20)^h

• P(h) = 200 (1.20)^h

• P(h) = 200 (.80)^h

How would you change this to a positive exponent:
1/x^-3

• 1/x³

• x³

• 3x

• 1/3x

Simplify
(c⁵)(c³)(c^-3)

• c⁵

• 3c¹¹

• c¹¹

• 3c⁴⁵

Write the product using an exponent. 
14 x 14 

• 2¹⁴

• 14²

• 14

• 14¹⁴

Find the equivalent expression.

(-9)(-9)(-9)(-9)(-9)

• -9⁵

• (-9)⁵

• -9 x 5

• -9 + -9 + -9 + -9+ -9

• keep the base, add the exponents

• keep the base, subtract the exponents

• keep the base, multiply the exponents

• add the base, add the exponents