First, use front end rounding to estimate each answer. Then find the exact answer.John's current salary is 
, but he expects to be earning 
within three years. If things turn out as John expects, how much more will he be earning in three years?
A. estimate: $40,000 - $29,100 = $10,900; exact: $40,000 - $29,188 = $10,812
B. estimate: $40,000 - $29,000 = $11,000; exact: $40,000 - $29,188 = $10,812
C. estimate: $40,000 - $30,000 = $10,000; exact: $40,000 - $29,188 = $10,812
D. estimate: $40,000 - $28,900 = $11,100; exact: $40,000 - $29,188 = $10,812
Answer: C
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Provide an appropriate response.A trade discount is the amount deducted from the list price by the:
A. retailer B. manufacturer C. both manufacturer and wholesaler D. wholesaler
Solve.x2 + 8x + 16 ? 0
A. {-4} B. (-?, -4] ? [-4, ?) C. [4, ?) D. {4}
A system of nonlinear equations is given. Sketch the graph of the equation of the system and then determine the number of real solutions to the system. Do not solve the system.x2 + y2 = 25y - x2 = 0
A. Two
B. Two
C. Two
D. One
Graph.g(x) = 
A. 
B. 
C. 
D. 