Evaluate.(-1)18
A. 18
B. 1
C. -1
D. -18
Answer: B
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Solve the problem.Rule: The numbers in the big circles are the sums of the numbers in the two small adjacent circles. Use this rule to complete the array.
A. 
B. 
C. 
D. 
Graph the polar equation.r = 5 cos ? - 6 sin ?
A. 
B. 
C. 
D. 
Find the x-intercept and y-intercept for each equation. If an intercept does not exist, say so.-2x - 10y = 10
A. x-intercept: (5, 0) y-intercept: (0, -1) B. x-intercept: (-1, 0) y-intercept: (0, -5) C. x-intercept: (-5, 0) y-intercept: (0, -1) D. x-intercept: (1, 0) y-intercept: (0, 5)
Solve the problem.Suppose f(x) = 29.4 + 1.2log (x + 1) models salinity of ocean water to depths of 
at a certain latitude. x is the depth in meters and f(x) is in grams of salt per kilogram of seawater. Approximate the salinity (to the nearest hundredth) when the depth is 77 meters.
A. 54.43 g/kg B. -27.13 g/kg C. 31.67 g/kg D. 56.83 g/kg