Skylar plans to use $3400 to open a savings account with an annual interest rate of 1.15%. how much more interest will he earn over 13 years if he chooses a compound interest account that compounds interest quarterly instead annually? round your answer to the nearest cent. interest compounded annually: a = p (1 + r)t interest compounded quarterly: a = p (1 +fraction numerator r over denominator 4 end fraction)4t

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function. a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.