Use the rules of exponents to simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive real numbers.-5k1/8(-4k3/8 + 8k3/4)
A. 20k3/64 - 40k3/32
B. 20k1/2 - 40k7/8
C. 20k-1/4 + 40k-5/8
D. 20k1/2 + 40k7/8
Answer: B
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A. 
B. 
C. 
D. 
Use the equality test for fractions to determine if the fractions are equal.
A. Yes B. No
Find the domain of the composite function f ? g.f(x) = 
; g(x) = 
A. {x 
B. {x 
C. {x 
D. {x 
Write down all the subsets of the given set.{1, ?, 6, ?}
A. {1}, {?}, {6}, {?}, {1, ?}, {1, 6}, {1, ?}, {?, 6}, {?, ?}, {6, ?}, {1, ?, 6}, {1, ?, ?}, {1, 6, ?}, {?, 6, ?}, {1, ?, 6, ?} B. {1}, {?}, {6}, {?}, {1, ?}, {1, 6}, {1, ?}, {?, 6}, {?, ?}, {6, ?}, {1, ?, 6}, {1, ?, ?}, {1, 6, ?}, {?, 6, ?}, ? C. {1}, {?}, {6}, {?}, {1, ?}, {1, 6}, {1, ?}, {?, 6}, {?, ?}, {6, ?}, {1, ?, ?}, {1, 6, ?}, {?, 6, ?}, {1, ?, 6, ?}, ? D. {1}, {?}, {6}, {?}, {1, ?}, {1, 6}, {1, ?}, {?, 6}, {?, ?}, {6, ?}, {1, ?, 6}, {1, ?, ?}, {1, 6, ?}, {?, 6, ?}, {1, ?, 6, ?}, ?