please solve this matlab code question

a. The decibel scale is a logarithmic scale that is widely used in electromagnetics and acoustics. In acoustics, the relationship between the sound intensity in W/cm and the sound pressure level in decibels (dB) is dB SPL = 10 108, where I, is a standard reference level = 10-12 W Calculate the decibal sound pressure level for a sound intensity level of 2.0W/cm. Store the result in a varlablo called probla. b. In radioactive decay, the number of active nuclel decreases with time according to the equation NI) Noe where is the decay time constant. It is rotands to the hall-life by Tua 2 If a sample has 10 billion active nuclei att 0, and its half-life is 6 hours, calculate the number of active nucle remaining after 5 days (5 days 24 hours). Store the result in a variable called probib