The following binomials are multiplied together as shown below. which of the following is a true statement?
(x+y)(a+b)
= xa+xb+ya+yb
a. there is no error; the binomials were correctly multiplied together.
b. binomials with different variables cannot be multiplied together.
c. the product was not simplified correctly.
d. there should only be three terms when multiplying two binomials.

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.