Solve the problem.Greg is opening a car wash. He estimates his cost equation as 
and his revenue equation as 
where x is the number of cars washed in a six-month period. Find the number of cars that must be washed in a six-month period for Greg to make a profit.
A. At least 405 cars
B. At least 40,463 cars
C. At least 3047 cars
D. At least 4047 cars
Answer: D
Mathematics
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Solve the problem.Find the image of the given figure under a 180° rotation about P.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Who am I? If you multiply me by 4 and subtract 9, the result is 59.
A. 104 B. 32 C. 8 D. 17
Mathematics
Use identities to find the indicated value for each angle measure.cos 2? = - 
and 
< ? < ?
Find sin ?.
A. sin ? = 
B. sin ? = 
C. sin ? = 0
D. sin ? = - 
Mathematics
If possible, solve each system by an algebraic method (substitution or addition method). Otherwise, state that the problem has no solution or an infinite number of solutions. 9x - 4y = 2-36x + 16y = -4
A. No solution
B. 
C. Infinite number of solutions
D. (4, 2)
Mathematics