The equation 20x2=4kx−13kx2+2 where k is a constant, has no real roots. It can be shown that k satisfies the inequality 2k2+13k+20<0. Find the set of possible values for k.

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

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.

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length