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.
Answer: A
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A. 24 mph B. 28 mph C. 21 mph D. 32 mph
Multiply.-49
A. -35
B. 35
C. 
D. -30
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Fahrenheit. Find a formula for the inverse of the function described.
A. f-1(x) = 
x - 32
B. f-1(x) = 
(x - 32)
C. f-1(x) = x + 32
D. f-1(x) = 
x + 32
Find parametric equations for the rectangular equation.y = 3x + 5
A. x = t, y = 3t2 + 5; 0 ? t < ?
B. x = t, y = 3t + 5; 0 ? t < ?
C. x = 
, y = t + 
; 0 ? t < ?
D. y = 3t, 3x = t - 5; 0 ? t < ?