Find the instantaneous rate of change for the function at the given value.f(x) = 5x + 9 at x = 2
A. 9
B. 0
C. 5
D. 10
Answer: C
Mathematics
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Factor completely.2x2 + 7x - 15
A. (2x - 5)(x + 3) B. (2x + 5)(x - 3) C. (2x - 3)(x + 5) D. (2x + 3)(x - 5)
Mathematics
Use the unit circle to determine the value of the given expression or state that it is undefined.csc 
A. - 
B. - 
C. - 
D. - 
Mathematics
Solve for x.
= 6
A. 3 B. 9 C. -3 D. -9
Mathematics
Find the book value after the given number of years, using the straight-line method. Round your answer to the nearest dollar.Find the book value at the end of 4 years.Cost:$30,700Estimated life:9 yearsEstimated scrap value:$3100
A. $24,567 B. $18,433 C. $12,267 D. $17,056
Mathematics