Determine the domain and the range of the function.f(x) = -x2 - 4x + 5
A. domain: {x|x ? -2}
range: {y|y ? 9}
B. domain: all real numbers
range: {y|y ? -9}
C. domain: {x|x ? -2}
range: {y|y ? -9}
D. domain: all real numbers
range: {y|y ? 9}
Answer: D
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Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.y = sin 
y = x2 - 2
A. x = 1.65, y = 0.74 or x = -1.20, y = -0.56 B. x = 1.65, y = 0.74 C. x = 1.65, y = 0.74 or x = -1.65, y = -0.74 D. x = -1.20, y = -0.56
Solve the problem.In a practice run, a race car driver's speed is clocked at 141.963 mph at the end of his first lap, and at 162.184 mph at the end of the next lap. How much faster was he driving at the end of the second lap?
A. 20.121 mph B. 20.221 mph C. 20.231 mph D. 21.221 mph
Interpret the linear equation.The altitude above sea level of an airplane just after taking off from an airport on a high plateau is given by the linear function y = 800x + 3089, where y is in feet and x is the time in minutes since take-off. Find and interpret the slope and y-intercept.
A. m = 800; The altitude of the airplane increases 800 feet every minute. b = 3089; The altitude of the airport where the airplane took-off is 3089 feet above sea level.
B. m = 3089; The minutes since take-off increases 3089 for every foot of altitude. 
The minutes that the plane takes to get to the altitude of the airport from sea level.
C. m = 800; The minutes since take-off increases 800 for every foot of altitude. 
; The minutes that the plane takes to get to the altitude of the airport from sea level.
D. m = 3089; The altitude of the airplane increases 3089 feet every minute. b = 3089; The altitude of the airport where the airplane took-off is 800 feet above sea level.
Write the whole number 2 as an equivalent fraction with the specified denominator. 7 = ?/3
A) 21/3 B) 28/3 C) 14/3 D) 7/3 E) 24/3