Evaluate the expression for the given values. If necessary, round to the nearest tenth.
x = 7, y = 5
A. 7
B. 1
C. 5
D. 2
Answer: A
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The average daily food consumption F of a herbivorous mammal with body weight x, where both F and x are measured in pounds, is given approximately by the equation F =  figure 1.png)
. Find the weight x of an elephant that consumes 400 lb of food per day.
What will be an ideal response?
Graph the equation.
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?
A. ?
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B. ?
C. ?
D. ?
E. ?
Identify the figure as a line, a ray, a line segment, or an angle. Then name the figure using the given points.
A. angle; ?DEF
B. ray; 
C. line; 
D. line segment; 
The fuel efficiency (in miles per gallon) of a sport utility vehicle (SUV) depends on its weight according to the formula
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?
where x is the weight of an SUV in pounds. According to the model, what is the weight of the least fuel-efficient SUV?
?
A. 3,000 pounds B. 3,100 pounds C. 2,000 pounds D. 6,000 pounds E. 491 pounds