Solve the problem.As Sunee improves her algebra skills, she takes 0.8 times as long to complete each homework assignment as she took to complete the preceeding assignment. If it took her 70 minutes to complete her first assignment, find how long it took her to complete the fifth assignment. Find the total time she took to complete her first five homework assignments. (Round to the nearest minute.)
A. 29 min; 207 min
B. 23 min; 235 min
C. 29 min; 235 min
D. 23 min; 207 min
Answer: C
Mathematics
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Solve the problem.Since the enactment of a smoking ban in a particular city, the number of smokers has slowly declined. Statistics show that the number of smokers in this city has decreased for four consecutive months by 3%, 2%, 5% and 2%. What was the overall percentage decrease in the number of smokers during this four month period?
A. 12% B. 11.5% C. 12.5% D. 88.5% E. 3%
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Provide an appropriate response.Divide: 
A. 7x + 9y B. 5x + 7y C. 7x - 9y D. 5x - 7y
Mathematics
Is the function graphed below one-to-one?
A. Yes B. No
Mathematics
Tell whether or not the relation is a function.{(-7,-7), (-7,-5), (-1,-6), (6,-1), (10,-7)}
A. Yes B. No
Mathematics