3. Find the equation for the following parabolas. a) The graph of y=x is translated 3 units left, 5 units down and is stretched vertically by a factor of 2.5.

b) A parabola that is compressed by a factor of } , opens up, and has its vertex at (2,4).

c) A parabola congruent (same shape) to 2012, has a maximum value of 7, and an axis of symmetry at x=1.​

Arectangle has a width of 9 units and length of 40 units. what is the length of a diognal. a. 31 unitsb. 39 unitsc. 41 units d. 49 units

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

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.