Identify the reciprocal if possible.
A. 1
B. 
C. Undefined
D. 12
Answer: D
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Solve the system for x and y. Show your answer as an ordered pair, (x, y). 8x + 9y = 36 2x + 6y = 24
A. No solution B. (-1, 5) C. (0, 4) D. (0, 5)
Sales of the latest recording by Brittania, a British rock group, are currently 
units/week (each unit representing 10,000 discs), where t denotes the number of weeks since the recording's release. Find an expression that gives the total number of discs sold as a function of t.
What will be an ideal response?
One mole of gas expands isothermically to triple its volume. If the gas temperature is 400K, what energy (in joules) is absorbed? ? Please enter your answer as a number without the units, rounded to the nearest integer.
Fill in the blank(s) with the appropriate word(s).
Completely factor the polynomial or state that the polynomial is prime.x4 + 18x2 + 81
A. (x2 - 9)2 B. (x + 9)2 C. (x + 9)(x - 9) D. (x2 + 9)2