Find the first term and the common ratio of the geometric sequence.an = -40(0.4)-n
A. a1 = -100, r = 0.4
B. a1 = 100, r = 2.5
C. a1 = -16, r = -2.5
D. a1 = 16, r = 16
Answer: B
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Multiply the polynomials using the special product formulas. Express the answer as a single polynomial in standard form.(x + 15)2
A. x2 + 225 B. 225x2 + 30x + 225 C. x2 + 30x + 225 D. x + 225
Multiply vertically.(2x + 3)(6x + 5)
A. 8x2 + 8 B. 12x2 - 8x + 15 C. 12x2 + 15 D. 12x2 + 28x + 15
Simplify.
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B. 
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D. 
Solve the problem.A fully cooked turkey is taken out of an oven set at 200°C (Celsius) and placed in a sink of chilled water of temperature 4°C. After 3 minutes, the temperature of the turkey is measured to be 50°C. How long (to the nearest minute) will it take for the temperature of the turkey to reach 15°C? Assume the cooling follows Newton's Law of Cooling: U = T + (Uo - T)ekt.(Round your answer to the nearest minute.)
Fill in the blank(s) with the appropriate word(s).