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Unit 4 Test Questions

Last updated about 2 months ago

21 Nsɛmmisa

7.1 Multiplying Exponents

1

1

1

7.2 Dividing Exponents

1

1

1

1

7.3 Rational Exponents

1

1

1

1

1

7.3 Rational Exponents (Part 2)

1

1

1

7.5 Exponential Functions

1

1

1

7.6 Growth and Decay

1

1

1

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1.

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2.

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3.

The area of a circle is found using the following formula where r represents radius. Find the area of a circle with a radius of 5x.

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4.

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5.

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6.

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7.

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8.

2

3

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9.

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10.

Write in radical form.

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11.

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12.

Write in exponential form.

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13.

12

8

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14.

2

15

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15.

Write in radical form.

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16.

What is the y-intercept, domain and range?

y-intercept: 1, domain: all real numbers, range: y > 0

y-intercept: 1, domain: all real numbers, range: all real numbers

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17.

Which is an exponential function, f(x) or g(x)?

f(x)

g(x)

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18.

Which has a constant rate of change, f(x) or g(x)?

f(x)

g(x)

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19.

Which equation represents exponential decay?

a

b

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20.

A certain fast-growing bacteria increases 6% per minute. If there are 500 bacteria now, how many will there be 10 minutes later?

895

512

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21.

A city’s population is about 124,000 and is decreasing at an annual rate of 0.2%. Write an equation that represents the population after 10 years?

169,000

121,542