Mica is solving for the zeros of a quadratic function by
completing the square. Her work is shown. What error
did Mica make?

O Mica should have set each x=0 instead of f(x).
O Mica should have added 2 to 3 instead of 1.
O Mica should have multiplied both sides by 2 instead
of dividing.
O Mica should have subtracted 1 from both sides
instead of adding.

What is the quotient of 42/3 divided by 4 1/5

Write the fraction or mixed number and the decimal shown by the model

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.