State whether or not the number is written in scientific notation.0.85 × 107
A. Not in scientific notation
B. In scientific notation
Answer: A
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Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 7
+ 3
A. 10
B. 10
C. 10
D. 21
Solve the problem.Find the moment of inertia about the z-axis of a thick-walled right circular cylinder bounded on the inside by the cylinder r = 1, on the outside by the cylinder r = 5, and on the top and bottom by the planes 
A. 624? B. 1250? C. 2496? D. 1248?
Solve the linear equation with the intersection-of-graphs method. Approximate the solution to the nearest hundredth if necessary.-6.2(x + 7.1) = -9.8(7.4 - 7x) + 20.9
A. -0.12 B. 0.1 C. 0.66 D. 1.28
Find the amplitude or vertical shift as requested.Find the amplitude of f(x) = 5 cos (3x) + 
A. 3
B. 15
C. 
D. 5