Perform the indicated operations. Assume that all variables represent nonnegative real numbers.
+ x
A. x(
+ 
)
B. 5x
C. 5
D. 4x
Answer: B
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Find an equation of the tangent line at x = a.y = 
; a = 5
A. y = 5x - 25 B. y = 5x + 12.5 C. y = 5x - 12.5 D. y = 10x - 12.5
Use a graphing calculator to plot the data and find the quadratic function of best fit.A rock is dropped from a tall building and its distance (in feet) below the point of release is recorded as accurately as possible at various times after the moment of release. The results are shown in the table. Find the regression equation of the best model. 
A. y = 15.95x2 B. y = -74.9 + 290 lnx C. y = - 148.4 + 112x D. y = 13.0 e0.686x
Draw a tree diagram for the experiment. Then use the diagram to find the number of possible outcomes.Toss two coins.
A. 4 outcomes B. 2 outcomes C. 1 outcome D. 3 outcomes
Solve the problem using the vector form v = 
[(cos ?)i + (sin ?)j].Two cables support a 500-lb weight, as shown. Find the tension in each cable. Round to the nearest tenth of a pound. 
A. Left cable tension = 250.0 lb; right cable tension = 250.0 lb B. Left cable tension = 557.7 lb; right cable tension = 408.2 lb C. Left cable tension = 408.2 lb; right cable tension = 557.7 lb D. Left cable tension = 250.0 lb; right cable tension = 355.5 lb