LOGARITHMIC

What do you call a function of the form 𝑓(𝑥) = 𝑙𝑜𝑔_𝑏 𝑥 where 𝑏 > 0 and 𝑏 ≠ 1?

• inverse function

• rational function

• exponential function

• logarithmic function

What is the value of 𝑙𝑜𝑔₂ 128?

• 6

• 8

• 5

• 7

What is the magnitude in the Richter scale of an earthquake that released 10¹⁰ joules of energy?

• 5.6

• 4.2

• 3.7

• 4.5

The decibel level of sound in a certain forest is 10^-7 watts/m². What is the corresponding sound intensity in decibels?

• 4

• 5

• 6

• 7

A solution contains hydrogen ion concentration of 1𝑥10^-7 moles. Calculate its pH value.

• 10

• 9

• 8

• 7