Add.-3.7 + (-19.2)
A. -15.5
B. -22.9
C. 15.5
D. 22.9
Answer: B
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Solve the problem.Find the equation of the plane containing the line x = 3t, y = 6 - t, z = 4 and the point 
.
A. 2x + y - 2z = 10 B. 2x - y + 2z = 10 C. 2x + y + 2z = 10 D. 2x - y - 2z = 10
Solve the problem using the information given in the table and the gross profit inventory method. Round to the nearest cent.Find the estimated cost of goods sold if a 30% gross profit is realized on sales and net sales are $450. 
A. $135.00 B. $225.00 C. $315.00 D. $180.00
Solve.Each month a beauty salon gives x manicures for $12.00/manicure. The cost to the owner of the beauty salon for each manicure is $7.35. The monthly fixed cost to maintain a manicure station is $120.00. Write an equation that relates the monthly profit, in dollars, to the number of manicures given each month. Then use the equation to find the monthly profit when 200 manicures are given in a month.
A. P =12x - 120; $2280 B. P = 4.65x - 120; $810 C. P = 7.35x - 120; $1350 D. P = 4.65x; $930
Answer the question.A piece of rectangular sheet metal is 23 inches wide. It is to be made into a rain gutter by turning up equal edges to form parallel sides. Let x represent the length of each of the parallel sides. What are the restrictions on x?
A. 0 < x < 11.5 B. 0 < x < 4.8 C. 0 < x < 23 D. 0 < x < 7.7