Evaluate the expression x - y for the given values of the variables.x = -14, y = -2
A. 16
B. -16
C. -12
D. 12
Answer: C
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Interpret the linear equation.The speed of a ball dropped from a tower is given by the linear function y = 32x where y is in feet per second and x is the number of seconds since the ball was dropped. Find and interpret the slope and y-intercept of the linear equation.
A. m = 32; The speed of the ball increases 32 feet per second every second. b = 0; The speed of the ball was 0 the moment it was dropped. B. m = 32; The speed of the ball increases 32 feet per second every second. There is no y-intercept to interpret. C. m = 32; The speed of the ball is 32 feet per second. b = 0; When the ball is dropped at x = 0, the ball has fallen 0 feet. D. m = 0; The speed of the ball does not increase as time passes. b = 32; At time x = 0, the ball has fallen 32 feet.
First, create a scatter plot for the data in the table. Then, use the shape of the scatter plot given to determine if the data are best modeled by a linear function, an exponential function, a logarithmic function, or a quadratic function.
A. 
linear function
B. 
logarithmic function
C. 
exponential function
D. 
quadratic function
Use the line graph to answer the question.Beginning with 1984, Lisa purchased a car every four years. The line graph illustrates the average fuel mileage in miles per gallon for each car. Between which two consecutive purchases did the greatest increase occur?
A. It is not possible to answer this question using the line graph. B. 1984 to 1988 C. 1992 to 1996 D. 1996 to 2000
Find an equation of an ellipse satisfying the given conditions.Vertices:(±13, 0); Length of minor axis: 20
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1