Solve the problem.A tree is 12 feet tall. A wire that stretches from a point that is 9 feet from the base of the tree to the top of the tree is 
feet long. Exactly how many feet long is the wire?
A. 21 ft
B. 15 ft
C. 25 ft
D. 225 ft
Answer: B
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Factor the polynomial.27a3 - 64b3
A. (3a - 4b)(9a2 + 16b2) B. (3a - 4b)(9a2 + 12ab + 16b2) C. (27a - 4b)(a2 + 12ab + 16b2) D. (3a + 4b2)(9a2 - 12ab + 16b2)
Solve the problem.The table below gives the number of births, in thousands, to females over the age of 35 for a particular state every two years from 1994 to 2010. 
Use technology to find the quartic function that is the best fit for this data, where x is the number of years after 1994. Round to five decimal places.
A. y = 0.01723x4 - 0.62258x3 + 6.66654x2 - 18.98367x + 43.26566 B. y = 43.26566x4 - 18.98367x3 + 6.66654x2 - 0.62258x + 0.01723 C. y = - 0.01723x4 + 0.62258x3 - 6.66654x2 + 18.98367x - 43.26566 D. y = 0.02223x4 - 0.82248x3 + 8.66654x2 - 15.98367x + 41.96566
Find the exact value of the expression using a sum or difference identity.sin 
A. 
B. 
C. 
D. 
Graph the piecewise linear function.f(x) = 
A. 
B. 
C. 
D. 