Factor the polynomial by grouping.x2 + 5x + 8x + 40
A. (x - 5)(x - 8)
B. (x + 5)(x + 8)
C. (x - 5)(x + 8)
D. prime
Answer: B
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Find the length of the curve.x = 6 cos t, y = 6 sin t, 0 ? t ? ?
A. 12? B. 36? C. 6? D. ?
Solve the problem.A woman can sell her computer graphics company for $900,000 cash or for $100,000 plus $65,000 at the end of each year for 4 years. (a) Find the present value of the annuity that is offered if money is worth 7% compounded annually. (b) If she takes the $900,000, spends $100,000 of it, and invests the rest in a 4-year annuity at 7% compounded annually, what size annuity payment will she receive at the end of each year? (c) Which is better, taking the $100,000 and the annuity or taking the cash settlement?
A. (a) $297,227.79; (b) $265,705.31; (c) $100,000 plus the annuity has a larger present value than $900,000. She should take $100,000 plus the annuity. B. (a) $217,967.04; (b) $206,659.68; (c) $100,000 plus the annuity has a smaller present value than $900,000. She should take the cash settlement. C. (a) $330,253.10; (b) $295,228.12; (c) $100,000 plus the annuity has a larger present value than $900,000. She should take $100,000 plus the annuity. D. (a) $220,168.73; (b) $236,182.49; (c) $100,000 plus the annuity has a smaller present value than $900,000. She should take the cash settlement.
Provide an appropriate response.Simplify and express your answer in terms of positive exponents: 
What will be an ideal response?
Simplify.4.6 ? 2.3 + 17.5 ? 4.5
A. 409.9 B. 89.33 C. 372.8 D. 126.4