Decide whether the relation is a function.{(-1, 4), (1, 2), (4, 8), (8, 7), (11, 2)}
A. Function
B. Not a function
Answer: A
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Solve the problem.Allied Radio is a company which makes clock radios. The following table gives the profit, y, in dollars that this company made during the three stated years, x.
This set of data can be modeled by f(x) = ax2 + bx + c, where x represents the year. Find a linear system for which the solution represents the values of a, b, and c. Use technology to solve this system. Then, using the quadratic equation, predict the profit that Allied Radio made in the year 1997. Round your answer to the nearest hundred dollars.
A. $400,300 B. $400,000 C. $399,800 D. $400,500
Determine the number that should be added to complete the square of the expression. Then factor the expression.x2 + 12x
A. -6; (x + 6)2 B. 36; (x + 6)2 C. 36; (x - 6)2 D. 6; (x + 6)2
Add or subtract. Write the answer in lowest terms.
+ 
A. 
B. 
C. 
D. 
Find the radius or diameter as requested.Find the diameter.
A. 2.2 yd B. 3.454 yd C. 0.55 yd D. 3.80 yd