Points A, B, C, and D, in that order, lie on a line. If  AB =3 cm, AC = 4 cm, and BD = 6 cm, what is CD, in centimeters?                
            
                    
                
                    To order certain plants from a catalog, it costs $3.00 per plant, plus a 5 percent sales tax, plus $6. 95 for shipping and handling regardless of the number of  plants ordered. If Company C ordered these plants  from the catalog at the total cost of $69. 95, howmany plants did Company C order?If x > y and y > z, which of the following represents thegreatest number?                
            
                    
                
                    The maximum recommended pulse rate R, when  exercising, for a person who is x years of age is given  by the equation R = 176−0.8x 。 What is the age, in  years, of a person whose maximum recommended  pulse rate when exercising is 1 40 ?If x > y and y > z, which of the following represents thegreatest number?