Write the fraction as an equivalent fraction with the given denominator.
= 
A. 
B. 
C. 
D. 
Answer: C
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Use power series operations to find the Taylor series at x = 0 for the given function.f(x) = x6 cos ?x
A. 
B. 
C. 
D. 
The concentration C, in milligrams per deciliter, of a drug in the bloodstream t hours after an injection is given by
.
?
A: Make a graph of C versus t over the first 10 hours since the injection.B: The drug is effective as long as the concentration is 50 milligrams per deciliter or higher. Add to your graph the horizontal line 
.C: During what time period is the drug effective? Round your answer to two decimal places.
What will be an ideal response?
Solve.Three-fourths a number decreased by one is between negative seven and sixteen. Find all such numbers.
A. 
< x < - 8
B. - 
< x < 
C. 
< x < 
D. - 8 < x < 
Provide an appropriate response.Factor completely: 49a2 - b2
Fill in the blank(s) with the appropriate word(s).