Simplify.3.9 ? 2.6 + 16.4 ? 18.1
A. 480.4
B. 307
C. 1167.8
D. 1341.2
Answer: B
Mathematics
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Provide an appropriate response.Change 9 meters to inches. (Round to nearest tenth; 1 m = 39.37 in.)
A. 354.3 B. 354.4 C. 0.3 D. 0.2 E. none of the above
Mathematics
Solve the problem.Suppose a cost-benefit model is given by 
where y is the cost in thousands of dollars for removing x percent of a given pollutant. Find the cost for removing 60% of the pollutant.
A. $8 thousands B. $2 thousands C. $9.2 thousands D. $79.5 thousands
Mathematics
Graph the equation by plotting points.y = -x2 - 2
A. 
B. 
C. 
D. 
Mathematics
Evaluate the root, if possible.
A. 5 B. Not real C. -25 D. -5
Mathematics