Solve the problem. Round your answer, if appropriate.The volume of a rectangular box with a square base remains constant at 900 cm3 as the area of the base increases at a rate of 13 
2/sec. Find the rate at which the height of the box is decreasing when each side of the base is 18 cm long. (Do not round your answer.)
A. 
cm/sec
B. 
cm/sec
C. 
cm/sec
D. 
cm/sec
Answer: C
Mathematics
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Factor, if possible.9x2 - 39x - 30
A. 3(3x + 2)(x - 5) B. (3x + 2)(3x - 15) C. 3(3x - 2)(x + 5) D. (9x + 6)(x - 5)
Mathematics
Determine whether the variation between the indicated quantities is direct or inverse.The price of an item and the quantity of the item that you can purchase with a given amount of money
A. Inverse B. Direct
Mathematics
Given f(x) and g(x), find the indicated composition.f(x) = 
; g(x) = x - 8Find (g ? f)(x).
A. (g ? f)(x) = 
B. (g ? f)(x) = 
- 8
C. (g ? f)(x) = 
D. (g ? f)(x) = 
- 8
Mathematics
Determine the x-intercepts of the graph of the quadratic equation.y = x2 - 4x + 7
A. none B. (4, 0) C. (2, 0), (-2, 0) D. (-4, 0)
Mathematics