Provide an appropriate response.What does the graph of the equation 
look like?
A. The yz-plane
B. The z-axis
C. The xy-plane
D. The y-axis
Answer: B
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Solve.The number of pets (measured in thousands) living in Springfield homes can be approximated by the equation N(x) = 0.17x2 - 0.25x + 198.3, where x is the number of years after 1990. Find 
A. N(12) = 2235.3 B. N(12) = 21,480 C. N(12) = 222,530 D. N(12) = 219,780
Use Heron's formula to solve the problem.An architect has measured the length of the sides of a triangular yard as 180 ft, 200 ft, and 
Find the area of the yard. Round to the nearest whole number. 
A. 1415 ft2 B. 17,616 ft2 C. 1000 ft2 D. 12,456 ft2
Solve the problem.The average daily temperature T of a city in the United States is approximated by T = 55 - 23 cos 
(t -30)where t is in days, 1 ? t ? 365, and t = 1 corresponds to January 1. Find the period of T.
Fill in the blank(s) with the appropriate word(s).
Write the expression in the standard form a + bi.
2
A. - 
B. i
C. 
D. -i