Provide an appropriate response.If a quadratic equation has no real solutions, what expression in the quadratic formula must be negative?
A. 
B. The denominator: 2a
C. b2 - 4ac
D. The numerator: - b ± 
Answer: C
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Solve using the percentage formula.What number is 3% of 386?
A. 115.8 B. 15.44 C. 11.58 D. 7.72
Solve the problem.Of the largest cities in a certain country, 40 are located on its east coast. If its east coast has 8 times as many large cities as the west coast, how many large cities does its west coast have?
A. 320 B. 4 C. 15 D. 5
Find (a) the gross profit, (b) the net income before taxes, and (c) the net income after taxes.Jill's Cleaning Service had net sales of 
operating expenses of 
taxes of 
and a cost of goods sold of 
A. (a) $58,000 (b) $126,000 (c)$111,400 B. (a) $180,000 (b) $126,000 (c)$111,400 C. (a) $238,000 (b) $126,000 (c)$111,400 D. (a) $58,000 (b) $238,000 (c)$223,400
Solve the problem.A box in the shape of a cube has a volume of 343 cubic inches. What is the depth of the box? 
A. 14 inches B. 19 inches C. 7 inches D. 49 inches