For the food described, find the percent of total calories from fat. If necessary, round to the nearest tenth of a percent.Salad dressing serving size 70 tablespoons. CaloriesTotal 70From fat 21
A. 30%
B. 333%
C. 15%
D. 3%
Answer: A
Mathematics
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Graph the curve described by the function, indicating the positive orientation.r(t) = 2cos t i + 3j + 2 sin t k, for 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics
Solve. Give your answer as a mixed number if appropriate.
= 
A. 138
B. 2
C. 21
D. 28
Mathematics
In the diagram below, the sum of the numbers in any 2 small circles is the number in the large circle between them. Complete the diagram so that the same pattern holds.
A. 
B. 
C. 
Mathematics
Solve the problem.A merchant has coffee worth $30 a pound that she wishes to mix with 40 pounds of coffee worth $90 a pound to get a mixture that can be sold for $40 a pound. How many pounds of the $30 coffee should be used?
A. 120 lb B. 240 lb C. 100 lb D. 200 lb
Mathematics