Solve. Write the answer as a mixed number in simplest form.On a recent trip, Asha drove 238 miles on 16
gallons of gasoline. How many miles per gallon did she average?
A. 3842 mpg
B. 544
mpg
C. 
mpg
D. 14
mpg
Answer: D
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: parabolas 
B. Domain: all points in the xy-plane; range: all real numbers; level curves: parabolas 
C. Domain: all points in the xy-plane excluding x = 0; range: all real numbers; level curves: parabolas 
D. Domain: all points in the xy-plane excluding x = 0; range: real numbers z ? 0; level curves: parabolas 
Solve the problem.In a certain state, it is determined that 87% of all registered Republicans vote for Republican candidates, with the remainder voting for Democratic candidates. It is also determined that 84% of all registered Democrats vote for Democratic candidates, with the remainder voting for Republican candidates. The percent of voters predicted to vote for each party in the next election is given by 
= 
where x is the percent of registered Republicans and y
is the percent of registered Democrats. If 
and 
, what percent of voters are predicted to vote for Democratic candidates in the next election? Round your answer to the nearest percent.
A. 87%
B. 84%
C. 54%
D. 46%
Graph the function.y = -0.8 ? 5x - 4
A. 
B. 
C. 
D. 
Find all the numbers for which the rational expression is defined.
A. x ? y B. x ? -y C. All real numbers. D. x ? 0, y ? 0