Use the REGRESSION feature on a graphing calculator.As the number of farms has decreased in South Carolina, the average size of the remaining farms has grown larger, as shown below. 
Let x represent the number of years since 1900. Use a graphing calculator to fit a quadratic function to the data. Round your answer to five decimal places.
A. y = 0.02536x3 + 1.21114 + 102.58741
B. y = 0.02536x2 + 1.21114 x + 102.58741
C. y = -.00114x3 + 0.19605x2 - 5.29775 + 143.55245
D. y = 0.02536x3 + 1.21114 x + 102.58741
Answer: B
Mathematics
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Perform the addition visually using symbols.9 + (-10)
A. -19 B. 1 C. 19 D. -1
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A small country consists of four states (State 1, State 2, State 3, and State 4). The total population of the country is 200,000. The standard quotas are q1 = 64.8, q2 = 89.9, q3 = 39.6, and q4 = 5.7 respectively.The standard divisor is
A. 1000. B. 100. C. 200. D. 2000. E. none of these
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Find the product AB.A = [-1 2 4], B = 
A. [-21]
B. 
C. [30]
D. [-9 0 -12]
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Solve.A race is 4 kilometers long. How many meters long is the race?
A. 400 m B. 0.4 m C. 40 m D. 4000 m
Mathematics