Solve.A calculator has a purchase price of $20. If the sales tax on this purchase is $1.70, find the sales tax rate.
A. 0.085%
B. 0.078%
C. 0.915%
D. 8.5%
Answer: D
Mathematics
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Find the indicated derivative. Assume that x is restricted so that ln is defined.h'(x) if h(x) = 2 ln (sin2 2x)
A. 
B. 8 cot 2x
C. 4 tan 2x
D. 
Mathematics
Find the quotient using long division.
A. x2 - 2x + 4 B. x2 + 2x + 4 C. x2 - 2x - 4 D. x2 + 4
Mathematics
Provide an appropriate response.Is there any way you can think of to check whether or not your simplified expression is equivalent to the original radical expression?
What will be an ideal response?
Mathematics
Solve by factoring:
A) –3, 4
B) –2, –3
C) 2, –7
D) –3, 3
E) 4, –3
Mathematics