Solve.There are currently 51 million cars in a certain country, increasing exponentially by 4.4% annually. How many years will it take for this country to have 60 million cars? Round to the nearest year.
A. 50 yr
B. 2 yr
C. 3 yr
D. 4 yr
Answer: D
Mathematics
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Solve the system of equations using matrices.2x - 7y = -19-5x + 4y = 7
A. (-1, -3) B. (1, -3) C. (1, 3) D. (-1, 3)
Mathematics
Graph the function f(x) by applying horizontal and vertical transformations. State the transformations that were performed.f(x) = 
(x - 2) - 9
A. 
left 2 units, down 9 units
B. 
right 9 units, down 2 units
C. 
right 2 units, down 9 units
D. 
left 9 units, down 2 units
Mathematics
Simplify.(-7)(2)4 - (-10)(-10)
A. -12 B. -212 C. 100 D. -112
Mathematics
Find the integral.
A. 20 cos 
+ 40x cos 
+ C
B. 20 sin 
- 40x cos 
+ C
C. 40 sin 
+ 20x cos 
+ C
D. 40 sin 
- 20x cos 
+ C
Mathematics