Solve the formula for the indicated letter. Assume that all variables represent nonnegative numbers.c2 + d2 + f2 = g2, for c
A. c = g - d - f
B. c = 
C. c = g2 - d2 - f2
D. c = -g + d + f
Answer: B
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Solve the given applied problems involving variation.The weight W of an object on the Moon varies directly as the weight E on earth. A person who weighs 
on earth weighs 34.6 lb on the Moon. How much would a 101-lb person weigh on the Moon?
A. 0.2 lb B. 20.2 lb C. 505 lb D. 308.6 lb
Refer to the following graphs to determine an appropriate response.Graph AGraph B 
? Graph CGraph D 
Which one is discontinuous over its domain? What is its range?
A. graph B; (-?, ?) B. graph C; (-?, ?) C. graph B; [0, ?) D. graph C; {-2, -1, 0, 1, 2}
Solve the problem.Suppose that during a certain step in a chemical manufacturing process the amount of hydrogen sulfide dissolved in a solution, measured in parts per million (ppm), is related to the elapsed time measured from the beginning of the step. The following table shows a representation of this relationship. Make a scatterplot of the data. What type of trend do you detect?
A. Little or no trend
B. Upward trend
C. Downward trend
D. Little or no trend
Solve the problem using the elimination method.Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $108 for 3 days and 300 miles, while Mary was charged $193 for 5 days and 600 miles. What does Best Rental charge per day and per mile?
A. $22 per day and 14? per mile B. $23 per day and 13? per mile C. $24 per day and 14? per mile D. $13 per day and 23? per mile