Solve by a method of your choice. A medical researcher needs 9 people to test the effectiveness of an experimental drug. If 12 people have volunteered for the test, in how many ways can 9
people be selected?
The 9 people can be selected in ways.

What is the multiplicative rate of change of the exponential function shown on the graph?

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.