Collect like terms.-2x + 1.9y - 1.6x + 9y
A. -3.6x + 1.9y + 9
B. -3.6x + 10.9y
C. 10.9x - 3.6y
D. -2x - 1.6x + 1.9y + 9y
Answer: B
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Find the indicated maximum or minimum values by the linear programming method. The constraints are shown below the objective function.Maximum P:P = 3x + 6yx ? 0, y ? 02x + y ? 4
A. 24 B. 6 C. 0 D. 4
Solve the problem.In a school survey, students showed these preferences for instructional materials. 
About how many students would you expect to prefer written materials in a school of 1000 students?
A. About 90 students B. About 180 students C. About 9 students D. About 360 students
Perform the operation and simplify.
?
?
A. 
B. ?
C. ?
D. ?
Write the complete binomial expansion.(x + y)5
A. x5 + 5x4y + 10x3y2 + 10x2y3 + 5xy4 + y5 B. x5 + y5 C. x6 + 6x5y + 15x4y2 + 20x3y3 + 15x2y4 + 6xy5 + y6 D. x5 - 3x4y + 10x3y2 + 10x2y3 - 3xy4 + y5