Write a general term an for the sequence. Assume that n begins with 1.
, - 
, 
, - 
, . . .
A. an = 
B. an = 
C. an = 
+ 2
D. an = 
+ 2
Answer: B
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Use scientific notation to solve the problem.If you could generate energy by fusing the hydrogen in ordinary tap water, how much water would you need to meet the energy needs of the United States for 56 years? Assume that the energy released by fusion of hydrogen in one liter of water is 7 × 1013 joules and that the U.S. annual energy consumption is 1 × 1020 joules. Give your answer in scientific notation.
A. 1.4 × 107 liters B. 8 × 101.5 liters C. 8 × 107 liters D. 8 × 10-7 liters
Solve the problem.A box contains a total of n + 4 light bulbs. In this box, there are 3 defective 40-watt bulbs, 6 defective 60-watt bulbs, and 7 defective 100-watt bulbs. If a light bulb is chosen at random by a quality control inspector, the probability, or chance, of one of the defective light bulbs being chosen is 
+ 
+ 
.Simplify this expression and then use the simplified expression to evaluate n = 96 and interpret the result.
A. 
; when there are 100 light bulbs, there are 6 chances in 50 that a defective light bulb is chosen.
B. 
; when there are 100 light bulbs, there are 4 chances in 25 that a defective light bulb is chosen.
C. 
; when there are 100 light bulbs, there are 8 chances in 25 that a defective light bulb is chosen.
D. 
; when there are 100 light bulbs, there are 10 chances in 50 that a defective light bulb is chosen.
Determine whether the following is a difference of squares.11x2 - y2
A. Yes B. No
Solve.A 16-ounce can of tomato soup is priced at $1.76. What is the unit price per ounce?
A. $0.13 per ounce B. $28.16 per ounce C. $1.65 per ounce D. $0.11 per ounce