40% of what number is equal to 17?
A) 2.35
B) 6.8
C) 42.5
D) 680
Answer: C) 42.5
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Provide an appropriate response.Prove that 
cos t = cos c for c ? 0. You may assume that 
sin t = 0 and 
cos t = 1.[Hint: let h = t - c and find 
cos(c + h) ]
What will be an ideal response?
Use Euler's method with the specified step size to estimate the value of the solution at the given point x*. Find the value of the exact solution at x*.y' = y - e-1x, y(0) = 2, dx = 1/3, x* = 2
A. Euler's method gives y ? 9.2983; the exact solution is 12.9315 B. Euler's method gives y ? 8.2740; the exact solution is 11.1513 C. Euler's method gives y ? 8.9605; the exact solution is 12.3212 D. Euler's method gives y ? 9.4866; the exact solution is 13.3004
Solve the problem.Suppose the sales of a particular brand of appliance are modeled by the linear function 
where S(x) represents the number of sales in year x, with 
corresponding to 2010. Find the number of sales expected in 2020 if this trend continues.
A. 13,190 B. 13,400 C. 6700 D. 6490
Solve the problem.
Jackie Rambler purchased a home for $124,000. Oakwood Mortgage Company approved her loan application for a 22-year fixed-rate loan at 6.25%. Jackie agreed to pay 20% of the purchase price as a down payment. How much interest would she have saved if she made the same loan with the same down payment for 12 years?
A. $41,521.15 B. $51,901.44 C. $43,592.45 D. $37,592.83