Solve the problem.The cost in millions of dollars for a company to manufacture x thousand automobiles is given by the function C(x) = 5x2 - 30x + 81. Find the number of automobiles that must be produced to minimize the cost.
A. 15 thousand automobiles
B. 6 thousand automobiles
C. 36 thousand automobiles
D. 3 thousand automobiles
Answer: D
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?What does the line of best fit not tell you about data that is strongly correlated?
A. ?It gives you a tool to predict y values for given x values. B. ?It is a predictive tool for your data set. C. ?It gives you y values in your data set for given x values. D. ?The distance between each point, on both sides of the line, and the line of fit equals 0. E. The line of fit is a straight line with a slope and y-intercep?t.
Solve the problem.One version of the formula for calculating the distance that a bullet travels when shot at an initial velocity of 1000ft/sec over a period of time t, in seconds, is d = ?16t2 + 1000t. Use this formula to find the distance the bullet travels after 3 seconds.
A. 2856 ft B. 1968 ft C. 2064 ft D. 3048 ft
Use a calculator to find the approximate value of the expression rounded to two decimal places.sec 
A. 1.00 B. 0.87 C. 1.04 D. 1.17
Insert < or > to make the statement true.-17 _____ 24
A. > B. <