Solve the problem.The graph of a function is given below. Tell whether the graph could possibly be the graph of a polynomial function. If it could be the graph of a polynomial function, tell which of the following are possible degrees for the polynomial function: 3, 4, 5, 6.
A. yes; 5, 6
B. yes; 3, 5
C. no
D. yes; 5 only
Answer: D
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Solve the problem.In 1990 the number of factory pollution incidents reported in Country X was 4300. This number had decreased roughly at a rate of 660 per year since 1982. (i) Find an equation of a line 
that describes this data, where y represents the number of pollution incidents during the year x. (Answers may vary.) (ii) Estimate the year when there were approximately 7740 incidents.
A. y = -660(x - 1990) + 4300; 1985 B. y = -660(x - 1982) + 4300; 1977 C. y = -4300(x - 1990) + 660; 1980 D. y = -660(x - 1988) + 4300; 1983
The graph of the linear equation y1 is shown on a graphing calculator screen, along with the x-value of the x-intercept of the line. Use the screen to solve the following equation or inequality.y1 = 0
A. {-5} B. {5} C. {0} D. Cannot be determined
Identify the following as an equation or an expression.12 + 8(x - 7)
A. Equation B. Expression
Solve the problem.The sum of the reciprocals of two consecutive integers is 9/20. Find the integers.
A. 3 and 4 B. 4 and 5 C. 5 and 6 D. 9 and 10