Use the vertical line test to determine if the graph is a graph of a function.
A. Function
B. Not a function
Answer: B
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Solve the inequality. Write the solution set in interval notation and graph it.
(x + 9) > 
(x + 6)
A. (24, ?)
B. (-24, ?)
C. (-?, 24)
D. (-?, -24)
To find the number of units that gives break-even for the product, solve the equation R = C. Round your answer to the nearest whole unit.A manufacturer has total revenue given by the function R = 70x and has total cost given by 
where x is the number of units produced and sold.
A. 20 units B. 7250 units C. 120 units D. 1208 units
Decide whether or not the function is continuous in the indicated x-interval.-4 to 0
A. Continuous B. Not continuous
Perform the indicated operations. Write the resulting polynomial in standard form.(4x - 9)(4x + 9)
A. 4x2 + 72x - 81 B. 16x2 - 81 C. 16x2 + 72x - 81 D. 16x2 - 72x - 81