Compute the discriminant. Then determine the number and type of solutions for the given equation.x2 + 6x + 9 = 0
A. 36; two unequal real solutions
B. 0; one real solution
C. -36; no real solution
D. -36; two unequal real solutions
Answer: B
Mathematics
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Evaluate the integral.
A. 
? cos 10
B. 
?2 cos 10
C. 
? cos 10
D. 
?2 cos 10
Mathematics
Graph the hyperbola.
- 
= 1
A. 
B. 
C. 
D. 
Mathematics
Find the vertex, the focus, and the directrix of the parabola.2x2 - 12x - y + 20 = 0
A. V: 
; F: (3, 4); D: x = 0
B. V: (3, 2); F: 
; D: y = 
C. V: 
; F: (3, 10); D: x = 6
D. V: 
; F: 
; D: x = 
Mathematics
Solve the problem.There are currently 78 million cars in a certain country, increasing exponentially by 2.9% annually. How many years will it take for this country to have 93 million cars? Round to the nearest year.
A. 4 yr B. 5 yr C. 6 yr D. 93 yr
Mathematics