Factor by grouping.3ra + 3rb - 5a - 5b
A. (a - b)(3r + 5)
B. (3a + b)(r - 5)
C. (a + b)(3r - 5)
D. (a - 5)(3r + b)
Answer: C
Mathematics
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Solve the problem.A company purchases a piece of equipment for A dollars, and the equipment depreciates at a rate of r each year. Its value V after n years is given by 
Expand this expression for n = 4.
A. V = A(1 + 4r + 12r2 + 24r3 + r4) B. V = A(1 - 4r + 12r2 - 24r3 + r4) C. V = A(1 - 4r + 6r2 - 4r3 + r4) D. V = A(1 + 4r + 6r2 + 4r3 + r4)
Mathematics
Indicate whether the statement is true or false.All non-negative integers are counting numbers.
A. true B. false
Mathematics
Graph the hyperbola.
- 
= 1
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.  figure 1.png)
(a) - 12 (b) 12 (c) 144 (d) 6 (e) 10
Mathematics