Solve the problem.A 200 gal tank is half full of distilled water. At time = 0, a solution containing 1 lb/gal of concentrate enters the tank at the rate of 4 gal/min, and the well-stirred mixture is withdrawn at the rate of 
When the tank is full, how many pounds of concentrate will it contain?
A. 100 pounds
B. 200 pounds
C. 120 pounds
D. 150 pounds
Answer: D
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Express in terms of a base raised to a positive exponent. Then simplify, if possible.
A. x7
B. x2
C. x-7
D. - 
R1 = 47 ê, R2 = 53 ê, and R3 = 90. What is the value of RT?
a. 9.75 ê
b. 19.51 ê
c. 45.00 ê
d. 63.98 ê
e. 190.0 ê
Three players (one divider and two choosers) are going to divide a cake fairly using the lone divider method. The divider cuts the cake into three slices (s1, s2, and s3).If the chooser's declarations are Chooser 1: {s2} and Chooser 2: {s2}, which of the following is a fair division of the cake?
A. Chooser 1 gets s3; Chooser 2 gets s1; Divider gets s2. B. Chooser 1 gets s2; Chooser 2 gets s1; Divider gets s3. C. Chooser 1 gets s2; Chooser 2 gets s3; Divider gets s1. D. Chooser 1 and Chooser 2 split s2; Divider gets s1 and s3. E. none of these
Provide an appropriate response.If an initial investment of $4000 grows to $5718 in six years, find the nominal rate of interest, compounded quarterly, that was earned by the money.
Fill in the blank(s) with the appropriate word(s).