Review: Solve Log & Exponential Equations

Solve: 7^-x = 49

• x = 1
• x = -1
• x = 2
• x = -2

Sovle for x:
5^{-3x - 1} = 25

• x = -1
• x = -4
• x = -3
• x = 1

Solve 8 = 2^5x+7

• x = ⅘
• x = ¼
• x = -⅘
• x = -¼

8^3x+3 = 8⁶

• x=28
• x=3
• x=1
• x=12

Log with a base "e" (log_e) is the same thing as...

• "e"
• Natural Logarithm (LN)
• Common Logarithm (Log)
• Natural Log, base "e"
  LN_e

Tags

CCSS.HSF.BF.B.5

Solve the equation for x.

• 5.352
• 4.326 E91
• 2.324
• 1.89

Tags

CCSS.HSF.LE.A.4

log₅(4x-7)=log₅(x+5)

• 3
• 12
• 4
• 7

log₉(x)+log₉(x+2)=log₉(35)

• 5
• -7
• 5, -7
• -7, -13

log(2x) - log(5) = log(30)

• 6/5
• 45/2
• 75
• -3/8

Solve log₉ (x - 4) + log₉ (x + 1) = log₉ (x + 5) + log₉ (x - 6)

• 17/2

• -9/16

• 13

• -8