The number of kilograms, y, of a radioactive element that remains after t hours can be modeled by the equation y = 0.23 ( 0.91 ) t . What is the rate of decrease of this radioactive element? A. 9% per hour B. 23% per hour C. 77% per hour D. 91% per hour

Given the parent function of [tex]f(x)=x^4[/tex], what change will occur when the function is changed to [tex]f(\frac{1}{2} x)[/tex]?

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125