Add or subtract. Assume that variables represent nonnegative values.
+ 5
A. 10
B. -
C. 38
D. 8
Answer: C
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Solve the problem.If an earthquake has an intensity of I, then its magnitude, as computed by the Richter Scale, is given by 
where I0 is the intensity of a small, measurable earthquake. (Consider 
for this question.) If one earthquake has a magnitude 
on the Richter scale and a second earthquake has a magnitude 
on the Richter scale,
how many times more intense (to the nearest whole number) is the second earthquake than the first? A. 316,228 B. 681 C. 316,227,766,017 D. 2
Find the probability of the event.If you are dealt two cards successively (with replacement of the first) from a standard 52-card deck, find the probability of getting a heart on the first card and a diamond on the second.
A. 
B. 
C. 
D. 
Solve the problem using the elimination method.Two angles are supplementary, and one is 5° more than six times the other. Find the larger angle.
A. 70° B. 155° C. 25° D. 110°
Rationalize the denominator. Assume all variables have nonzero values.
A. 
B. 
C. 
D. 