# Algebra 2B Logs/Exponentials: Question Preview (ID: 23742)

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**Evaluate: log 100**

a) 1

b) 10

c) 2

d) 3

**Evaluate: e^4.5**

a) 90.017

b) 4.5

c) e

d) 1.504

**Describe the transformation: f(x) = log (x + 4)**

a) up 4

b) down 4

c) right 4

d) left 4

**Describe the transformation: f(x) = -2^x**

a) Reflects over y-axis

b) Reflects over x-axis

c) down 1

d) left 1

**describe the transformation: f(x) = logx - 5**

a) down 5

b) up 5

c) left 5

d) right 5

**Use change of base: log (base 3) 14**

a) 1.146

b) 0.477

c) 2.402

d) 0.416

**What is the base of log x?**

a) 1

b) 10

c) e

d) 0

**What is the base of ln x?**

a) 0

b) 1

c) e

d) 10

**Use properties to write as a single log: log 3 + log x**

a) log 3x

b) log (3/x)

c) log 3 + x

d) log 3 - x

**Use properties to write as a single log: log 20 - log 4**

a) log 80

b) log 16

c) log 5

d) log 24

**Solve: log 2x = log 18**

a) x = 18

b) x = 2

c) x = log18

d) x = 9

**Solve: 2^x = 2^ 15**

a) x = 2

b) x = 7.5

c) x = 15

d) x = 13

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