Solve the problem.If one earthquake is 105.4 times as intense as another, what is the difference in the Richter scale readings of the two earthquakes?
A. 5.4
B. 4.6
C. 12.4
D. 15.4
Answer: A
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Solve the problem.An economist predicts that the buying power B(x) of a dollar x years from now will decrease according to the formula B(x) = 0.51x. How much will today's dollar be worth in 7 years? Round the answer to the nearest cent.
A. $0.62 B. $2.70 C. $3.57 D. $0.01
Find the midpoint of the segment having the given endpoints.(7, 6) and (1, 2)
A. (8, 8)
B. (6, 4)
C. 
D. 
In the problem, P = (x, y) is the point on the unit circle that corresponds to the real number t. Find the exact value of the indicated trigonometric function of t.
?Find cot t.
A. 
B. - 
C. - 
D. 
Approximate the area under the graph of f(x) and above the x-axis using n rectangles.f(x) = 2x3 - 1 from x = 1 to x = 6; n = 5; use right endpoints
A. 825 B. 850 C. 800 D. 875