Find the sum of the first n terms of the following arithmetic sequence:Second term is 13, third term is 21; n = 17
A. 1,219
B. 1,173
C. 1,085
D. 1,112
Answer: B
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Solve the given differential equation. (The form of yp is given.)D2y + 3Dy - 10y = 30 (Let yp = A.)
A. y = c1e2x + c2e-5x + 3 B. y = c1e2x + c2e-5x C. y = c1e2x + c2e-5x - 3 D. y = c1e-2x + c2e5x - 3
Solve.A Ferris wheel has a radius r of 26.8 feet. The height of the tower t is 36.6 feet. The distance d from the origin to the base is 22.5 feet. Find the standard form equation of the circle represented by the Ferris wheel. 
A. (x + 22.5)2 + (y + 36.6)2 = 718.24 B. (x - 22.5)2 + (y - 36.6)2 = 26.8 C. (x + 22.5)2 + (y + 36.6)2 = 26.8 D. (x - 22.5)2 + (y - 36.6)2 = 718.24
Match the quadratic function with its graph.f(x) = (x - 2)2 + 3
A. 
B. 
C. 
D. 
Solve the problem.If $4500 is invested in an account that pays interest compounded continuously, how long will it take to grow to $13,500 at 7%?
A. 10.0 yr B. 17.3 yr C. 15.7 yr D. 7.7 yr