Solve the mixture problem.A merchant has coffee worth $3 a pound that she wishes to mix with 40 pounds of coffee worth $9 a pound to get a mixture that can be sold for $4 a pound. How many pounds of the $3 coffee should be used?
A. 240 lb
B. 120 lb
C. 100 lb
D. 200 lb
Answer: D
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Convert the decimal form numeral to a numeral in the base indicated.2874 to base 9
A. 35489 B. 31939 C. 38439 D. 34839
Convert the measurement as indicated. Round to the nearest tenth, if necessary.41.97 L to gallons
A. 44.5 gal B. 39.9 gal C. 10.9 gal D. 158.6 gal
A manufacturer of wooden chairs and tables must decide in advance how many of each item will be made in a given week. Use the table to find the system of inequalities that describes the manufacturer's weekly production.Use x for the number of chairs and y for the number of tables made per week. The number of work-hours available for construction and finishing is fixed.
A. 3x + 2y ? 0 2x + 4y ? 0 x ? 30 y ? 24 B. x ? 5 y ? 6 C. x ? 6 y ? 4 D. 3x + 2y ? 30 2x + 4y ? 24 x ? 0 y ? 0
Expand the expression using the Binomial Theorem.(ax + by)5
A. a5x5 + 5a4bx4y + 10a3b2x3y2 + 10a2b3x2y3 + 5ab4xy4 + b5y5 B. a5x5 + 5abx4y + 10a3b2x3y2 + 10a2b3x2y3 + 5abxy4 + b5y5 C. a5x5 + 5a3b2x3y2 + 5ab4xy4 + b5y5 D. a5x5 + b5y5