Ype the correct answer in the box. Round your answer to the nearest tenth. The noise rating of an air conditioner is 50 decibels, and the noise rating of a washing machine is 65 decibels. Determine how many time greater the washing machine's intensity of sound is.

Use the formula , where β is the sound level in decibels, I is the intensity of sound you are measuring, and Io is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

The washing machine's intensity of sound is times greater than that of the air conditioner.