Find an equation for the indicated ellipse.Vertices (±5, -2) and foci (±3, -2)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
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Solve the problem using your calculator.The paired data below consist of the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters). Use a graphing calculator to model the data with a linear function that predicts a plant's growth as a function of temperature.
A. y = 7.30 - 0.112x B. y = -14.6 - 0.211x C. y = 7.30 + 0.122x D. y = 14.6 + 0.211x
Determine whether the equation is quadratic.-4x2 + x = 7
A. No B. Yes
Use the formula for 
to solve.In how many ways can a student work 7 out of 10 questions on an exam?
A. 120 B. 10,000,000 C. 720 D. 21
In a certain city there is a river running through the middle of the city. There are four islands and eleven bridges as shown in the figure below.
A graph that appropriately models this situation would have
A. 4 vertices and 11 edges. B. 11 vertices and 4 edges. C. 6 vertices and 11 edges. D. 11 vertices and 6 edges. E. none of these