Please provide handwritten explanation to solve the following. ( I personally understand better seeing handwriting explanations)I have already solved some this is a review over intensity and decibels please correct i am solving something incorrectly. Thank you

= 2x = 10 x - 3 1/ 2 - 10 = 1/ 10 7. (4 pts) The intensity of a signal increases from 1.2 m W/cm to 4.8 m W/cm. Determine the amount of change in decibels. 1 . 2 WIcm 4.8 mill CAR 0.25 8. (4 pts) A wave's intensity is 1.6 mW/cm'. There is a decrease of - 9 dB. What is the final intensity? - 9 d B 16 6 XX (-5) 3. 8 1. 6 x (8 ) = 0 2 mw / cm (- 3)+(-3) + (- 3) 2 X 2 X 2 - P T x 2 = 8 1/ 2 1/2 1/ 2 9. (4 pts) The intensity of an ultrasound wave is changed by +30 dB. This means that the current intensity is 1000 as much as the original level. + 30 dB 10+ 10+ 10 10 x 10 x 10 100 X 10 = 1000