Factor the expression. Express your answer so that only positive exponents occur. (x + 6)-3/5 + (x + 6)-1/5 + (x + 6) 1/5
A. (x + 6)-3/5 [1 + (x + 6)4/5 + (x + 6)6/5]
B. (x + 6)-3/5 [1 + (x + 6) 2/5 + (x + 6)4/5]
C. (x + 6)-3/5 [1 + (x + 6)1/5 + (x + 6)3/5]
D. (x + 6)-3/5 [1 + (x + 6) -2/5 + (x + 6) -4/5]
Answer: B
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A. 0.
B. 0.
C. 0.
D. 0.
Decide whether the situation involves permutations or combinations.A selection of a chairman and a secretary from a committee of 14 people.
A. Permutation B. Combination
Find the first term and the common ratio of the geometric sequence.an = 3
n
A. a1 = - 
, r = 
B. a1 = - 
, r = 
n
C. a1 = 
, r = 
D. a1 = 
, r = 3
Write a system of equations for the problem, and then solve the system.The owner of Nuts2U Snack Shack mixes cashews worth $5.50 per pound with peanuts worth $2.00 per pound to get a half-pound, mixed-nut bag worth $1.80. How much of each kind of nut is included in the mixed bag?
A. Cashews: 0.07 lb; peanuts: 0.43 lb B. Cashews: 0.27 lb; peanuts: 0.23 lb C. Cashews: 0.10 lb; peanuts: 0.40 lb D. Cashews: 0.23 lb; peanuts: 0.27 lb