Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = 2.8x + 0.15
B. y = 3x + 0.15
C. y = 2.8x
D. y = 3x
Answer: D
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Solve.Using the first three terms of the appropriate Taylor expansion, find the area bounded by the curve 
and 
A. 0.4779 B. 0.6758 C. 0.1352 D. 0.8277
Solve the problem.Roberto invested some money at 8%, and then invested $2000 more than twice this amount at 10%. His total annual income from the two investments was $4120. How much was invested at 10%?
A. $6000 B. $28,000 C. $3000 D. $30,000
Determine whether the two matrices are inverses of each other by computing their product.
and 
A. No B. Yes
Solve the minimization problem by using the simplex method to solve the dual problem.Minimize 6x1 + 8x2subject to x1 + 2x2 ? 6 2x1 + x2 ? 8and x1 ? 0, x2 ? 0
A. Minimum = 
when x1 = 3 and x2 = 
B. Minimum = 
when x1 = 
and x2 = 
C. Minimum = 36 when x1 = 6 and x2 = 0
D. Minimum = 64 when x1 = 0 and x2 = 8