Given f(x)=x^2+4x+7 .

what equation shows function f written in vertex form?

a) f(x)=(x+2)^2+3

b)f(x)=(x+4)^2+11

c) f(x)=(x+3)^2+7

d) f(x)=(x+4)^2−7

Is the open sentence 5x-2=3x+2 true when x=2? justify your answer.

The sum of two numbers is 12 and their difference is 18 what are the two numbers

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.