Use the discriminant to determine the number and type of solutions for the equation.x2 - 2x + 4 = 0
A. Two complex-number solutions
B. One real-number solution
C. Two real-number solutions
Answer: A
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Solve the problem by estimating.Andy wants to buy a refrigerator for $699, a stove for $759, and a dishwasher for $549. Round each cost to the nearest hundred to estimate the total cost.
A. $2000 B. $1800 C. $2100 D. $1900
Provide an appropriate response.Find a cofunction equivalent to tan 16°.
A. cot 74° B. cot 16° C. cot 106° D. sec 16°
Fill in the blank with one of the words or phrases listed below.
The 
is the smallest number that is a multiple of all numbers in a list of numbers.
A. mixed number B. equivalent C. least common denominator D. least common multiple
Use Bayes' rule to find the indicated probability.Two stores sell a certain MP3 players. Store A has 34% of the sales, 5% of which are of defective items, and store B has 66% of the sales, 1% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives a defective item of this product as a gift. What is the probability it came from store B?
A. 0.275 B. 0.22 C. 0.5667 D. 0.7083