Elizabeth had 10 stamps. she decided to write letters to some of her relatives. after she sent her letters, she had 6 stamps left. how many letters did she mail? a. 10 - 4 = 6 b. 60 6 = 10 c. 6 + 10 = 16 d. 10 - 6 = 4

Which of these sequences is a geometric sequence a 1,2,4, 7, 11, 16, 22. b. 2.4.8.14.22.38 c.3.6.9. 15.18,21 d. 3,9,27,81,243,729,

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters