Use a sum or difference identity to find the exact value.tan(- 15°)
A. - 
+ 2
B. 
C. 
D. 
- 2
Answer: D
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The following table shows the percentage P of the American food dollar that was spent on eating away from home as a function of the date d.
196919892009
253034?
Use functional notation to express the percentage of the American food dollar that was spent eating away from home in 2016. Then use the average rate of change to estimate that value.
?
A. 
B. ?
C. ?
D. None of the above
Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. 2x + 3y - 6z = -13 B. 2x - 3y - 12z = -13 C. 2x - 3y - 12z = -1 D. 2x + 3y - 6z = -1
As part of a statistics project, a 6th grade teacher brings to class a container with 200 red marbles and 800 white marbles which are thoroughly mixed. To figure out how many marbles in the container are red without actually counting them all, a student randomly draws 150 marbles from the container. Of the 150 marbles drawn, 33 are red.Suppose that the student is given the N-value. What is a reasonable estimate for the number of red marbles in the container?
A. 183 B. 150 C. 33 D. 220 E. none of these
Write as a decimal number rounded as indicated.
; Round to the nearest hundredth.
A. 0.692 B. 0.69 C. 1.44 D. 0.68