Simplify the expression. Write the result using positive exponents only.r-5
A. 
B. r1/5
C. - 
D. -r5
Answer: A
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Provide an appropriate response.What is wrong with the following?y = (x3)(x5)
= (3x2)(5x4) = 15x6What is the correct derivative?
What will be an ideal response?
Solve the problem.The fineness (purity) of gold is regulated by law and is the same in all parts of the world. The purity is stated in terms of karats. 18-kt gold is 18 parts gold and 6 parts alloy. Write this measure of purity as a fraction in lowest terms.
A. 
B. 
C. 
D. 3
Perform the indicated operation.Let B = 
. Find -3B.
A. 
B. 
C. 
D. 
Identify the conic that the polar equation represents. Also, give the position of the directrix.r = 
A. ellipse, directrix is perpendicular to the polar axis at a distance 
units to the right of the pole
B. hyperbola, directrix is perpendicular to the polar axis at a distance 3 units to the right of the pole
C. hyperbola, directrix is perpendicular to the polar axis at a distance 
units to the left of the pole
D. ellipse, directrix is perpendicular to the polar axis at a distance 3 units to the left of the pole