a graphic designer makes a sketch for an image that will appear on a poster. the width of the sketch is 9 inches. she figures that it should be enlarged to 350% to make the final image. how wide will the final image be?
a. 3.5 in.
b. 35 in.
c. 31.5 in.
d. 315 in.

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

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.