Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = -3x2 + 30x + 225

A. Increasing on (-5, ?); decreasing on (-?, -5)
B. Increasing on (-?, 0); decreasing on (0, -?)
C. Increasing on (-?, 5); decreasing on (5, -?)
D. Increasing on (-?, -5); decreasing on (-5, -?)


Answer: C

Mathematics

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Solve the problem.Vicki's car rental company charges $30 per day plus $0.25 per mile to rent a car. Joshua's rental company charges $35 per day plus $0.20 per mile. The total daily cost, y, in dollars, of renting the car if x miles are driven can be modeled by the linear system: y = 0.25x + 30 Vicki's y = 0.20x + 35 Joshua's Use graphing to solve the system. Interpret the coordinates of the solution in practical terms. 

A. {(100, 55)}; Both companies charge $100 for 55 miles driven. B. {(80, 50)}; Both companies charge $50 for 80 miles driven. C. {(100, 60)}; Both companies charge $60 for 100 miles driven. D. {(100, 55)}; Both companies charge $55 for 100 miles driven.

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Find ?f.f(x, y, z) = ex3 + y3 + z5

A. F = 3x2ex3 + y3 + z5i + 3y2ex3 + y3 + z5j + 5z4ex3 + y3 + z5k B. F = 3x2ex3i + 3y2ey3j + 5z4e z5k C. F = x2ex3 + y3 + z5i + y2ex3 + y3 + z5j + z4ex3 + y3 + z5k D. F = x3ex3 + y3 + z5i + y3ex3 + y3 + z5j + z5ex3 + y3 + z5k

Mathematics

Convert the numeral to Hindu-Arabic form.MMCV

A. 7105 B. 7005 C. 7205 D. 7206

Mathematics

Provide an appropriate response.Bob drives 324 miles in 6 hours. Explain the significance of the ratio of 6 to 324. What units associated to this ratio?  

What will be an ideal response?

Mathematics