Multiply and simplify.(
- 2)(
- 3)
A. 
- 3
- 2
+ 6
B. 5
+ 6
C. 
+ 
+ 6
D. 
+ 6
Answer: A
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Estimate the value of the quantity.The table gives dye concentrations for a cardiac-output determination. The amount of dye injected was 
Plot the data and connect the data points with a smooth curve. Find the area under the curve using rectangles. Use this area to estimate the cardiac output.
Time (sec)
Dye concentration (mg/L)
A. 0.1 L/min B. 17.7 L/min C. 8.9 L/min D. 406.0 L/min
Give a formula for a piecewise-defined function f for the graph shown.
A.
f(x) = 
B.
f(x) = 
C.
f(x) = 
D.
f(x) = 
Identify the figure as a line, segment, or ray. Then use the correct symbol to name the figure.
A. line segment; 
B. line segment;
C. line; 
D. ray; 
Using a calculator, evaluate the expression. Round the answer to four decimal places.cos(cos-1(-0.9372))
A. 0.9372 B. 0.4686 C. -0.4686 D. -0.9372