Solve.(x - 3)(x + 6) = 0
A. 3, 6
B. -3, 6
C. 3, -3, 6, -6
D. 3, -6
Answer: D
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Doris invested some money at 7% and some money at 8%. She invested $4,000 more at 8% than she did at 7%. Her total yearly interest from the two investments was $470. How much did Doris invest at each rate?
A. $100 at 7%, $4,900 at 8% B. $2,000 at 7%, $5,000 at 8% C. $1,000 at 7%, $6,000 at 8% D. $1,000 at 7%, $5,000 at 8% E. $1,500 at 7%, $4,500 at 8%
Find the median for the given sample data.The weight in pounds of ten randomly-selected football players are:
Find the median of these weights.
A. 250 lb B. 248 lb C. 245 lb D. 252 lb
Solve the problem.A thermometer is taken from a room at 71°F to the outdoors where the temperature is 
Determine what the reading on the thermometer will be after 5 minutes, if the reading drops to 
after 1 minute. Assume the cooling follows Newton's Law of Cooling: U = T + (Uo - T)ekt.(Round your answer to two decimal places.)
Fill in the blank(s) with the appropriate word(s).
Find all the complex roots. Write the answer in the indicated form.The complex cube roots of 125(cos 273° + i sin 273°) (polar form)
A. -5(cos 91° + i sin 91°), 5(cos 211° + i sin 211°), -5(cos 331° + i sin 331°) B. 5(cos 91° + i sin 91°), 5(cos 131° + i sin 131°), 5(cos 171° + i sin 171°) C. -5(cos 91° + i sin 91°), 5(cos 131° + i sin 131°), -5(cos 171° + i sin 171°) D. 5(cos 91° + i sin 91°), 5(cos211° + i sin 211°), 5(cos 331° + i sin 331°)