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 99°C.
A. -59,580 m/°C
B. -2160 m/°C
C. -1160 m/°C
D. 2160 m/°C
Answer: B
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Solve the problem.The slope of the tangent line to the parabola y2 = -12x at a certain point on the parabola is 
. Find the coordinates of that point.
A. 
B. 
C. 
D. 
Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. x-intercepts: (-4, 0) and (4, 0) , y-intercept: 
B. x-intercepts: (-4, 0) and (4, 0) , y-intercept: 
C. x-intercept: (0, 0) , y-intercept: (0, 0) ;
D. x-intercept: (0, 0) , y-intercept: (0, 0) ;
Simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive numbers.(b7)2/7
A. b2/49 B. b9/7 C. b1/2 D. b2
The associative and commutative properties for addition allow for three or more integers to be added in any order. Find the given sum.-7 + (-5) + (-10)
A. -12 B. 2 C. -22 D. 8