Identify the slope and y-intercept of the line whose equation is given. write the y-intercept as an ordered pair. (remember the slope-intercept form is y=mx+b q=2-r a. slope=-2; y-intercept (0,0) b. slope==2; y-intercept (0,-1) c. slope==-1; y-intercept (0,2) d. slope==1; y-intercept (0,2)

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

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.