23. In the diagram below of right triangle ABC, altitude BD is drawn to
hypotenuse AC.
If BD = 4, AD = x - 6, and CD = x, what is the length of CD?
(1) 5
(2) 2
(4) 11
(3) 8

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

Suppose that in 2008 , 840,800 citizens died of a certain disease assuming the population of teh country is 399 miliion, what is the mortality rate in units of deaths per 100,000 people?