Solve the problem.Suppose the cost of producing x items is given by C(x) = 4000 - x3 and the revenue made on the sale of x items is R(x) = 400x - 10x2. Find the number of items which serves as a break-even point.
A. 10 items
B. 25 items
C. 5 items
D. 100 items
Answer: A
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Solve the problem.There were 490 people at a play. The admission price was $2.00 for adults and $1.00 for children. The admission receipts were $760. How many adults and children attended?
A. 190 adults and 300 children B. 110 adults and 380 children C. 220 adults and 270 children D. 270 adults and 220 children
Use scientific notation to perform the following operations. Leave your answer in scientific notation.(4.8 × 1024) ÷ (1.2 × 106)
A. 4 × 1018 B. 4 × 104 C. 4.8 × 1018 D. 4 × 1030
Convert the angle in degrees to radians. Express the answer as multiple of ?.90°
A. 
B. 
C. 
D. 
Find a polynomial P(x) having root –2 – 5i, degree 2, leading coefficient 1, and real coefficients. Write the polynomial in expanded form.
A) P(x) = x² – 4x – 21 B) P(x) = x² + 4x – 21 C) P(x) = x² – 4x + 29 D) P(x) = x² + 4x + 29