Perform the indicated operation.Subtract (3x - 30) from the sum of (-2x + 9) and (9x - 11).
A. -4x - 28
B. 8x + 50
C. 4x + 28
D. 10x - 32
Answer: C
Mathematics
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Perform the indicated operations, expressing the answer in simplest form with rationalized denominators.
A. 4x4
B. 16xz
C. 32xz
D. 4x8z
Mathematics
Solve the problem.If f(x, y) = (2000ey)/(1 + 
/2) represents the population density of a planar region on Earth, where x and y are measured in miles, find the number of people within the rectangle -6 ? x ? 6 and -3 ? y ? 0.
A. 8000(1 - e-3) ln 4 ? 10,538
B. 4000(1 - e-3) ln 
? 7904
C. 4000(1 - e-3) ln 4 ? 5269
D. 2000(1 - e-3) ln 4 ? 2635
Mathematics
Solve.Find the area of the figure. Use 3.14 for ?.
A. 292.48 m2 B. 196.48 m2 C. 296.96 m2 D. Not enough data
Mathematics
Determine if the function is concave up or concave down in the first quadrant.y = x3/2
A. Concave up B. Concave down
Mathematics