Solve the problem.An investment is worth $3897 in 1995. By 1999 it has grown to $5417. Let y be the value of the investment in the year x, where x = 0 represents 1995. Write a linear equation that models the value of the investment in the year x.
A. y = 
x + 3897
B. y = -380x + 3897
C. y = 380x + 3897
D. y = -380x + 6937
Answer: C
Mathematics
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Solve the problem.The area A = ?r2 of a circular oil spill changes with the radius. At what rate does the area change with respect to the radius when 
A. 20 ft2/ft B. 20? ft2/ft C. 100? ft2/ft D. 10? ft2/ft
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Find the indicated root, or state that the expression is not a real number.
A. 3 B. 12 C. -3 D. 9
Mathematics
Completely factor the polynomial or state that the polynomial is prime.9x4 - 9x2 - 10
A. (9x2 - 5)(x2 + 2) B. (3x2 + 1)(3x2 - 10) C. (3x2 - 5)(3x2 + 2) D. (3x - 2)(3x + 5)
Mathematics
Simplify.x10 ÷ x5
A. 
B. x10 - x5
C. x5
D. x15
Mathematics