Solve the problem.The formula E = 1000(100 - T) + 580(100 - T)2 is used to approximate the elevation (in meters) above sea level at which water boils at a temperature of T (in degrees Celsius). Find the rate of change of E with respect to T for a temperature of 87°C.
A. -15,080 m/°C
B. -66,540 m/°C
C. 16,080 m/°C
D. -16,080 m/°C
Answer: D
Mathematics
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Evaluate the expression.(-4)-1
A. -4
B. - 
C. 
D. 4
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Write as a percent.
A. 6.875% B. 68.75% C. 145.4545% D. 0.6875%
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Write the number as an improper fraction.6
A. 
B. 
C. 
D. 
Mathematics
The principal cycle of the graph of a trigonometric function of the form y = A tan (Bx - C) + D or 
for B > 0 is given. Determine the equation of the function represented by each graph.y = A cot (Bx - C) + D
A. y = 4 cot(x + 1) - 
B. y = 4 cot
+ 1
C. y = cot
+ 1
D. y = 4 cot
+ 1
Mathematics