1) what is the domain of the relation {(-25)}
a) {-2,-1,0} b) {-2,-1} c) {2,4,5} d) {4,5,6}

2) what is the domain of y=√x
.
a) x ≥ 0
b) x ≤ 0
c) x ≥ 1
d) all real numbers

3) what is the range of y = x2?
a) y ≥ 0
b) x ≥ 0
c) y ≤ 0
d) all real numbers

Ineed no it anyone can see this

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.

Which of the following parabolas opens down?