Write the expression in the standard form a + bi.
4
A. -4i
B. 4i
C. 4
D. -4
Answer: D
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Evaluate and simplify completely. Write your answer as a mixed number if possible.6
+ 5
A. 11
B. 12
C. 12
D. 11
Solve the problem.Use the comparison line graph to determine who needed more time to prepare for Test 1, Jennifer or David.
A. Jennifer B. David
Reduce to lowest terms.
A. 
B. 
C. 
D. 
Use a graphing calculator to plot the data and find the quadratic function of best fit.Southern Granite and Marble sells granite and marble by the square yard. One of its granite patterns is price sensitive. If the price is too low, customers perceive that it has less quality. If the price is too high, customers perceive that it is overpriced. The company conducted a pricing test with potential customers. The following data was collected. Use a graphing calculator to plot the data. What is the quadratic function of best fit? Round values to the nearest thousandth.
A. B(x) = -0.243x2 + 3.115x - 22.126 B. B(x) = -0.0243x2 + 3.115x + 22.126 C. B(x) = -0.0243x2 + 3.115x - 22.126 D. B(x) = 0.0243x2 - 3.115x - 22.126