Solve the problem.A model for advertising response is given by 
where N(a) = the number of units sold and a = the amount spent on advertising, in thousands of dollars. How many units are sold after spending $4000 (a = 4) on advertising?
A. 6805
B. 1970
C. 1776
D. 1421
Answer: B
Mathematics
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Determine whether or not the set is well defined.{x | x is a football team that has won the Super Bowl}
A. Well defined B. Not well defined
Mathematics
Determine the number of terms and identify the coefficient of each term of the expression.-9m - 3z
A. 2; -9 and 3 B. 2; 9 and 3 C. 2; 9 and -3 D. 2; -9 and -3
Mathematics
Subtract. 5x6 + 6x4 - 5
A. -4x6 + 15x4 - 22 B. -4x6 - 6x4 - 22 C. -4x6 - 6x4 + 12 D. 2x10
Mathematics
Solve the problem.A car rental agency advertised renting a luxury, full-size car for $39.95 per day and $0.49 per mile. If you rent this car for 4 days, how many whole miles can you drive if you only have $200 to spend.
A. 50 miles B. 318 miles C. 63 miles D. 82 miles
Mathematics