# Exponential Decay And The Number

10 Questions | Total Attempts: 257  Settings  • 1.
Which of the following is an exponential function?
• A.

Y=3^2

• B.

Y=3x

• C.

Y=(1/3)^x

• 2.
Which of the following is an exponential decay function?
• A.

Y=3^x

• B.

Y=3^(-x)

• 3.
3^0 = ?
• A.

3

• B.

0

• C.

1

• 4.
choose the equation that best describes the graph
• A.

Y= - (0.25)^x

• B.

Y=(0.25)^x

• C.

Y = (0.5)^x

• 5.
If you take 400 mg of ibuprofen and every hour 29% of ibuprofen is broken down in the body, how much ibuprofen is in your body system after 3 hours? Round to whole number (without decimals) without units.
• 6.
Make a table for the equation y = (2/3)^x  -1x->0,1,2y->?,?,?
• A.

Y->1,2,3

• B.

Y->0,1,2

• C.

Y->0,-.33,-.56

• 7.
An exponential decay function becomes smaller and smaller until it reaches 0. true or false
• 8.
An exponential decay function always has -x as its power. true or false
• 9.
Nadia put \$500 in her bank account with an interest compounded annually at the rate of 10%. This is an example of exponential growth. true or false
• 10.
Nadia put \$500 in her bank account with an interest compounded annually at the rate of 10%. The model for this problem is a)y = 500 (1.010)xORb) y = 500 (1.10)x
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