Find the vertex for the parabola whose equation is given.y = x2 + 9x
A. (0, -9)
B. (- 
, - 
)
C. (0, 0)
D. (-9, -81)
Answer: B
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Find the area of the specified region.Inside the cardioid r = ?(1 + sin ?), ? > 0
A. 
- 2?2
B. 2??
C. 
D. 
+ 2?2
Find the required value by setting up the general equation and then evaluating.Find y when x = 28 if y varies directly as x, and y = 12 when x = 16.
A. 21
B. 
C. 7
D. 28
Solve the problem.Looking ahead to retirement, you sign up for automatic savings in a fixed-income 401K plan that pays 5.5% per year compounded annually. You plan to invest $3500 at the end of each year for the next 20 years. How much will your account have in it at the end of 20 years?
A. $122,039 B. $120,496 C. $123,337 D. $123,809
Round to the indicated place.The Missouri River is the second longest river in the United States. The Missouri River flows for about 2,317 miles. Round to the nearest ten miles.
A. 3,300 miles B. 2,317 miles C. 2,320 miles D. 2,310 miles