Radium - 226 has a half-life of 1600 years. Suppose we have a 300 g sample. (a) Find a formula for the mass remaining after t years. (b) How much of the sample remains after 200 years? (c) After how long will only 20 g remain?
What will be an ideal response?
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Solve the problem.If f(x) = 
, g(x) = 
, and h(x) = 4x+ 16, find f(g(h(x))).
A. 
B. 4
+ 16
C. 
D. 
+ 4
The wages of the employees of a company are presented in this histogram. Answer the question.
How many employees earn at least $4 and less than $6 an hour?
A. 10 B. 20 C. 34 D. 22
The function that gives the cost of a certain commodity is defined by
?
?
where x is the number of pounds of a certain commodity sold and C(x) is measured in dollars. Sketch the graph of the function C.
?
Determine the values of x for which the function C is discontinuous.
?
A. ?
x = 20, 30, 40
B. ?
x = 50, 60
C. ?
x = 20, 30, 40
Solve the problem.Northwest Molded molds plastic handles which cost $1.00 per handle to mold. The fixed cost to run the molding machine is 
per week. If the company sells the handles for $4.00 each, how many handles must be molded weekly to break even?
A. 1087 handles B. 1812 handles C. 5436 handles D. 1208 handles