The rectangular coordinates of a point are given. Find polar coordinates of the point. Express ? in radians.(2, -2
)
A. 
B. 
C. 
D. 
Answer: D
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Express the limit as a definite integral.
?xk; [3, 11]
A. 
B. 
C. 
D. 
Calculate the sum.(-5) + (+8)
A. 13 B. 3 C. -3 D. -13
Solve the problem.Suppose an animal feed to be mixed from soybean meal and oats must contain at least 100 lb of protein, 20 lb of fat, and 9 lb of mineral ash. Each 100-lb sack of soybean meal costs $20 and contains 50 lb of protein, 10 lb of fat, and 8 lb of mineral ash. Each 100-lb sack of oats costs $10 and contains 20 lb of protein, 5 lb of fat, and 1 lb of mineral ash. How many sacks of each should be used to satisfy the minimum requirements at minimum cost? Fractional sacks are allowed.
A. 0 sacks of soybeans and 4 sacks of oats
B.
| 2 sacks of soybeans and 0 sacks of oats |
C.
sacks of soybeans and 
sacks of oatsD.
sacks of soybeans and 
sacks of oatsFind the median. Round to the nearest tenth when necessary.The numbers of vehicles passing though a toll booth in one hour for seven consecutive hours are as follows: 2, 4, 20, 25, 36, 37, 48
A. Median = 36 vehicles B. Median = 25 vehicles C. Median = 20 vehicles D. Median = 25.1 vehicles