Simplify. Assume that each variable is nonnegative.x2
- x3
+ 9x
A. -6x3
B. 12x3
C. 12x3
D. 13x3
Answer: C
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Solve the problem.In a sports league of n teams in which each team plays every other team twice, the total number N of games to be played is given by N = n2 - n. What is the total number of games to be played in a football league having 19 teams?
A. 38 B. 380 C. 342 D. 361
Solve the problem.f(x) = log2(x - 6) and g(x) = log2(2x + 16).Solve f(x) + g(x) = 6.
A. {8} B. {-8} C. {256} D. {-256}
Solve the problem.Find the volume V of a sphere of radius 3.5 in. Use 3.14 for ?. If necessary, round the result to the nearest tenth.
A. V = 179.5 in3 B. V = 1436 in3 C. V = 51.3 in3 D. V = 101 in3
Solve.Normal body temperature is 98.6°F. Ellen's temperature is 
How many degrees above normal body temperature is this?
A. 2.3 degrees B. 1.2 degrees C. 2.2 degrees D. 1.3 degrees