Use graphical methods to solve the linear programming problem.2x + 6y ? 304x + 2y ? 20x ? 0y ? 0Minimize P = 0.18x + 0.12y
A. Minimum of 1.08 when x = 4 and y = 3
B. Minimum of 1.2 when x = 4 and y = 4
C. Minimum of 1.86 when x = 9 and y = 2
D. Minimum of 1.02 when x = 3 and y = 4
Answer: D
Mathematics
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Use differentiation to determine whether the integral formula is correct.
dx = -4 cot 
+ C
A. Yes B. No
Mathematics
Use Pythagorean identities to find the indicated function value.cos ? = - 
, 180° < ? < 270°; find sin ?
A. - 
B. - 
C. - 
D. - 
Mathematics
Find the inverse of the function.f(x) = x2 - 2, x ? 0
A. f-1(x) = 
B. f-1(x) = x2 + 2
C. f-1(x) = - 
D. f-1(x) = - 
Mathematics
Estimate the sum or difference by rounding each number to the nearest hundred.
A. 534 B. 1400 C. 600 D. 500
Mathematics