Use an alternative method to express the set.{d : d is a letter in the word cat and also in the word in}
A. {?}
B. {c, a, t, i, n}
C. (c, a, t, i, n)
D. { }
Answer: D
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Provide an appropriate response.Divide and simplify: 
Fill in the blank(s) with the appropriate word(s).
Let x be a number. Translate the English phrase or sentence into a mathematical expression. The difference of a number and 68
A. 68 B. x - 68 C. 68x D. 68 - x
The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function M(x) = log 
, where xo = 10-3.What is the magnitude of an earthquake whose seismographic reading is 7.6 millimeters at a distance of 100 kilometers from its epicenter?
A. 0.38808 B. 3.8808 C. 2.0281 D. 0.20281
Use positive rational exponents to rewrite the expression. Assume variables are positive.
-2
A. -z4/7
B. 
C. 
D. -z28