MA 15900 EXAM 3 SPRING 20101 1. Solve the equation. 2x3+4x2−11x+7=2x3−2x2+41) x=−34,−532) x=−12,−543) x=−25,−124) x=−13,−325) x=13,326) x=25,127) x=12,548) x=34,539) No solution exists2. A block of steel on a level, frozen pond, is given an initial speed V. Even though the block of steel is sliding on smooth ice, there will be a small friction force that will slow the block of steel until it comes to a stop. Assume that the distance, d, the block travels is directly proportional to the square of V. When V= 4 feet per second, d= 32 feet. Find the distance the block travels if the initial speed is 10 feet per second. 1) 16 10feet2) 80 feet3) 100 feet4) 112 feet5) 132 feet6) 200 feet7) 400 feet8) 432 feet9) None of the above 3. How much money, invested at an interest rate of 8% per year compounded continuously, will amount to $65,000 in 17 years? Round your answer to the nearest cent. 1) $16,666.672) $16,682.953) $16,758.424) $17,567.485) $47,794.126) $88,400.007) $240,501.178) $252,112.149) $253,252.56
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