Solve the problem.The gravitational attraction A between two masses varies inversely as the square of the distance between them. If the force of attraction is 
when the masses are 
apart, what is the attraction when the masses are 
apart?
A. 4 lb
B. 1 lb
C. 2 lb
D. 3 lb
Answer: B
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Use the figure to answer the question.The average amount of weekend television viewing of high school students is shown below and used to create a frequency table.
Frequency Distribution Table
Which interval has the greatest amount of students?
A. 9-10 B. 5-6.5 C. 3-4.5 D. 7-8.5
Provide an appropriate response.Solve: 
= x
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A textbook economy has only two industries, the electric company and the gas company. Each dollar's worth of the electric company's output requires 0.20 of its own output and 0.4 of the gas company's output. Each dollar's worth of the gas company's output requires 0.50 of its own output and 0.7 of the electric company's output. What should the production of electricity and gas be (in dollars) if there is a $16 M demand for electricity and a $7 M demand for gas?
A. Electricity: $107.5 M; Gas: $100 M B. Electricity: $125 M; Gas: $92.5 M C. Electricity: $115 M; Gas: $103.5 M D. Electricity: $97.5 M; Gas: $103 M
Solve the system of linear equations.9x - 2y = 298x + 9y = 112
A. (-5, 8) B. No solution C. (5, 8) D. (-4, -7)