Write an equivalent expression. Use an associative law.(x + 9) + y
A. y + (x + 9)
B. x(9 + y)
C. x + (9 + y)
D. (9 + x) + y
Answer: C
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Use the standard normal curve table to find the closest z-score for the given condition.30.2% of the total area is to the left of z.
A. -0.88 B. 0.52 C. -0.52 D. -0.53
Solve the problem.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 + 2179, 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 = 2179; The minutes since take-off increases 2179 for every foot of altitude. 
The minutes that the plane takes to get to the altitude of the airport from sea level.
B. m = 800; The altitude of the airplane increases 800 feet every minute. b = 2179; The altitude of the airport where the airplane took-off is 2179 feet above sea level.
C. m = 2179; The altitude of the airplane increases 2179 feet every minute. b = 2179; The altitude of the airport where the airplane took-off is 800 feet above sea level.
D. 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.
Evaluate the expression.(-60) ÷ 5
A. -12
B. -22
C. - 
D. 12
Find any missing lengths in the similar shapes.
A. x = 1.5, y = 2 B. x = 2, y = 3 C. x = 1, y = 2 D. x = 1, y = 1.5