Solve the problem.Suppose that the demand and price for a certain model of graphing calculator are related by 
where p is the price (in dollars) and q is the demand (in hundreds). Find the demand for the calculator if the price is $40. Round to the nearest whole number if necessary.
A. 13 calculators
B. 19,600 calculators
C. 327 calculators
D. 1307 calculators
Answer: D
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Solve the problem.If s is proportional to t2, and s = 405 when t = 9, find s when t is 8.
A. 45 B. 72 C. 360 D. 320
Find the angles of the trignometric values in degrees. ? represents the unknown angle measure. cos ? = 0.3152
A. 71.6° B. 69.2° C. 69.19° D. 71.63°
Use a graphing calculator to plot the data and find the quadratic function of best fit.An engineer collects data showing the speed s of a given car model and its average miles per gallon M. Use a graphing calculator to plot the scatter diagram. What is the quadratic function of best fit?
A. M(s) = -0.0063x2 + 0.720x + 5.142 B. M(s) = 0.063x2 + 0.720x + 5.142 C. M(s) = -0.631x2 + 0.720x + 5.142 D. M(s) = -6.309x2 + 0.720x + 5.142
Simplify the complex fraction.
A. 
B. 36x(x + 6)
C. 
D. 