How much more intense is a whisper measuring 45 dB compared to rock concert measuring 120 dB using the equation I = 10^(d/20)

What is this inequality notation? t is less then or equal to 2

Afactory adds 3 red drops and 2 blue drops of coloring to white paint to make each pint of purple paint. the factory will make 50 gallons of the purple paint.how many drops of red and blue coloring will the factory need in the 50 gallon batch of purple paint.

Factor the monomial completely 42a3b3