Find Dxy.y = sin 
- cos 
A. cos 
+ sin 
B. 
cos 
+ 
sin 
C. - 
cos 
- 
sin 
D. 
cos 
- 
sin 
Answer: B
Mathematics
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Solve the problem.The function A(x) = 1.06x -.02x3 gives the approximate alcohol level (in tenths of a percent) in a person's blood x hours after drinking about 8 ounces of 100-proof whiskey. What would the person's alcohol level be 2 hours after drinking? Give answer as a percent.
A. 0.196% B. 0.208% C. 1.96% D. 2.08%
Mathematics
Evaluate the expression.71
A. 7
B. 1
C. -7
D. 
Mathematics
For the pair of similar triangles, find the missing side n. Round to the nearest tenth when necessary.
A. n = 20 m B. n = 18 m C. n = 6 m D. n = 24 m
Mathematics
Multiply.(
- w)(
+ w)
A. a - w
B. a - 2w
- w2
C. a - w2
D. a + 2w
- w2
Mathematics