Multiply the polynomials using the FOIL method. Express the answer as a single polynomial in standard form.(5x + 10y)(3x - 8y)
A. 15x2 - 10xy - 80y2
B. 15x2 + 30xy - 80y2
C. 15x2 - 10xy - 10y2
D. 15x2 - 40xy - 80y2
Answer: A
Mathematics
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Divide. Write with positive exponents.
A. 8x2 - 3x + 3 + 
+ 
B. 8x3 - 24x10 + 24x9 + 32x7 + 7x5
C. 8x3 - 3x2 + 3
D. 64x11 - 3x2 + 3 + 
+ 
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Perform the operations indicated. Write your answer in simplest form.-84 ÷ (-3)
A. -28
B. 18
C. 
D. 28
Mathematics
Solve the problem.In a composition class containing there are 12 freshmen, 23 sophomores, 11 juniors, and 25 seniors. What fraction of the class is seniors?
A. 
B. 
C. 
D. 
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Simplify the exponential expression.x2y-3
A. 
B. 
C. y3x2
D. y13x2
Mathematics