Solve the special system by elimination. If the system is dependent, write the solution using set-builder notation with the common line expressed in slope-intercept form.
A. {(x, y)|y = -7x + 9}
B. 
C. (0, 0)
D. ?
Answer: B
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Solve the problem. Express your answer in scientific notation, and round to one decimal place. In a state with a population of 7,000,000 people, the average citizen spends $6,000 on housing each year. What is the total spent on housing for the state?
A. $42 × 1010 B. $4.2 × 1010 C. $42 × 1011 D. $4.2 × 109
Provide an appropriate response.If a parabola opens downward, the highest point on the graph is called the 
of the parabola.
A. axis B. top C. middle point D. vertex
Find the mode or modes for the list of numbers.Number of samples taken each day: 5, 9, 28, 3, 2, 8, 47, 1, 4, 16
A. 8 samples B. 9 samples C. 11.7 samples D. No mode
Solve the application and answer with a complete sentence.Rhianna put $360 in a special account that gained 3% interest. How much interest did the account gain after 2 years?
A. The account gained $216.00 interest after 2 years. B. The account gained $108.00 interest after 2 years. C. The account gained $21.60 interest after 2 years. D. The account gained $10.80 interest after 2 years.