Solve the problem.The weekly sales in thousands of items of a product has a seasonal sales record approximated by 
(t is time in weeks with 
referring to the first week in the year). During which week(s) will the sales equal 75,530 items?
A. week 21 and week 30
B. week 4, week 20, and week 52
C. week 4 and week 47
D. week 30 and week 47
Answer: B
Mathematics
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Solve the problem.The parking lot at a medical center has 60 cars in it. 90% of the cars are two-door. How many cars are two-door?
A. 7 cars B. 540 cars C. 67 cars D. 54 cars
Mathematics
Solve the system of equations.
A. x = 5, y = 3, z = 4; (5, 3, 4) B. x = 4, y = 3, z = 5; (4, 3, 5) C. x = 4, y = 5, z = 3; (4, 5, 3) D. inconsistent
Mathematics
Multiply.(-3x - 9)(x + 5)
A. -3x2 - 24x - 24 B. -3x2 - 26x - 45 C. -3x2 - 24x - 45 D. -3x2 - 45x - 24
Mathematics
Find the volume of the solid of revolution formed by rotating about the x-axis the region bounded by the curves.y = 
, y = 0, x = 1, x = 6 Give your answer in exact form.
A. 
?
B. 
?
C. 
? ln 6
D. ? ln 6
Mathematics