Use the graph to determine the domain and range of the function.
A. domain: all real numbers
range: all real numbers
B. domain: all real numbers
range: {y|y ? 0}
C. domain: {x|x ? 0}
range: {y|y ? 0}
D. domain: {x|x ? 0}
range: all real numbers
Answer: D
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Decide whether the figure is convex or not convex.
A. Not convex B. Convex
Compute (h ? 0) for the given function.f(x) = 6x2 + 6x
A. 12x + 6h + 6 B. 12x + 6 C. 18x - 8h + 12 D. 12x2 + 6h + 6x
A candy merchant sells two variety bags of candy. Each pound of variety bag A contains 60% caramels and 40 % chocolates and sells for $8 a pound. Each pound of variety bag B contains 45% caramels and 55% chocolates and sells for $10 a pound. The merchant has available 400 pounds of caramels and 300 pounds of chocolate. The merchant will try to sell the amount of each blend that maximizes her income. Let x be the number of pounds of variety bag A and y be the number of pounds of variety bag B. Since the merchant above has available 300 pounds of chocolates, one inequality that must be satisfied is in the situation above is
A. 0.45x + 0.55y ? 300 B. 0.40x + 0.55y ? 300 C. 0.60x + 0.45y ? 300 D. 0.60x + 0.40y ? 300 E. none of these
Solve the problem.Midtown Delivery Service delivers packages which cost $1.30 per package to deliver. The fixed cost to run the delivery truck is $435 per day. If the company charges $6.30 per package, how many packages must be delivered daily to make a profit of 
?
A. 87 packages B. 334 packages C. 107 packages D. 57 packages