Solve the problem.Southern Granite and Marble sells granite and marble by the square yard. One of its granite patterns is price sensitive. If the price is too low, customers perceive that it has less quality. If the price is too high, customers perceive that it is overpriced. The company conducted a pricing test with potential customers. The following data was collected. 
Let B(x) be the number of buyers at a price of x dollars per square yard. Use a graphing calculator to draw a scatterplot to describe the data. Using the same viewing window, draw the graph of the quadratic model 
-4.0px;" /> Use the model to estimate the price(s) at which the number of buyers will be 60.
What will be an ideal response?
The number of buyers will be 60 if the price is $37 or $91 per square yard.
Mathematics
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Solve the problem.Calculate 
, where R ={(x, y): 0 ? x ? 1, 0 ? y ? 1}. (Hint: This integral represents the volume of a certain solid. Calculuate its volume from elementary principles.)
A. 7.5 B. 6.5 C. 7 D. 14
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Find the sum.1 +2 + 3 + . . . + 755
A. 284,635 B. 570,780 C. 570,025 D. 285,390
Mathematics
Determine if the function is concave up or concave down in the first quadrant.y = x4/9
A. Concave down B. Concave up
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Solve.The fixed monthly payment required to amortize a loan of L dollars over a term of n months at an annual interest rate of r is given by 
. Evaluate this expression when 
and 
.
A. $1330.60 B. $1397.14 C. $1264.07 D. $1463.67
Mathematics