Write the expression in the standard form a + bi.
4
A. - 
+ 
i
B. - 
- 
i
C. - 
- 
i
D. - 
+ 
i
Answer: B
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Provide an appropriate response.Find the area and the perimeter of the given figure. Use the formulas A = s2 and P = 4s.
A. 24 cm2; 36 cm B. 36 cm; 24 cm2 C. 24 cm; 36 cm2 D. 36 cm2; 24 cm
Solve the problem.At the two points where the curve x2 + 2xy + y2 = 4 crosses the x-axis, the tangents to the curve are parallel. What is the common slope of these tangents?
A. 0 B. -2 C. -1 D. 1
Solve.In 1996, an outbreak of a disease infected 18 people in a large community. By 1997, the number of those infected had grown to 31. Find an exponential growth function that fits the data. (Round decimals to three places.)
A. N(t) = 18e5.44t, where t is the number of years after 1997. B. N(t) = 18e0.544t, where t is the number of years after 1997. C. N(t) = 18e5.44t, where t is the number of years after 1996. D. N(t) = 18e0.544t, where t is the number of years after 1996.
Divide as indicated. Write the quotient in standard form.
A. 
- 
i
B. - 
- 
i
C. 
- 
i
D. - 
- 
i