Solve the problem.A video rental company charges $4 per day for renting a video tape, and then $3 per day after the first. Use the greatest integer function and write an expression for renting a video tape for x days.
A. y + 4 = 3
B. y = 3x + 4
C. y = 3
+ 4
D. y = 
Answer: C
Mathematics
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Solve the problem.A radio telescope has a parabolic surface. If it is 1 meters deep and 
wide, how far is the focus from the vertex?
A. 36 m B. 1 m C. 3 m D. 9 m
Mathematics
Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.(5x5 - 6x4) + (3x5 - 8x4 - 9)
A. 8x5 - 14x4 - 9 B. -11x10 C. 7x5 - 3x4 - 9x D. -9x - 14x5 - 5x4
Mathematics
Solve the inequality. Express your answer in set notation.x2 ? 49
A. {x| -7 ? x ? 7} B. {x| -7 < x < 7} C. {x| x ? 7} D. {x| x ? -7 or x ? 7}
Mathematics
Multiply. Write the answer in simplest form.
? - 
A. - 
B. 38
C. - 
D. 
Mathematics