Provide an appropriate response.
Identify the equation as pure quadratic, incomplete quadratic, complete quadratic, or not quadratic: 9x2 = 4 .
A. Incomplete quadratic
B. Not quadratic
C. Pure quadratic
D. Complete quadratic
Answer: C
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Solve the problem.The graph shows the total sales for each month for two years. 
MonthWhat were the total sales for the first 6 months of 2010?
A. $390,000 B. $298,000 C. $366,000 D. $290,000
Solve.If 2 ft 7 in. of material is used to manufacture one scarf, how much material is needed for 8 scarves?
A. 16 ft 7 in. B. 17 ft 10 in. C. 20 ft 8 in. D. 24 ft 8 in.
Solve.
x2 = 10
A. No real solution
B. 9
, -9
C. 
, - 
D. 810, -810
Solve the problem.The polynomial C(x) = -0.006x4 + 0.140x3 - 0.53x2 + 1.79x measures the concentration of a dye in the bloodstream x seconds after it is injected. Find the rate of change of concentration with respect to time.
A. 
= -0.024x4 + 0.420x3 - 1.06x2 + 1.79x
B. 
= -0.006x3 + 0.140x2 - 0.53x + 1.79
C. 
= -0.024x3 + 0.420x2 - 1.06x + 1.79
D. 
= -0.018x3 + 0.280x2 - 0.53x + 1.79