Find an equation of the inverse relation.y = -3x2 - 9x - 2
A. x = -3y2 - 9y - 2
B. x = -3y2 + 9y + 2
C. x = -3y2 - 9x - 2
D. y = -3x2 + 9x + 2
Answer: A
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If you have the following function, f ( x ) = -x 2 - 5x + 4, compute f (3), f (-2), f (5), f (-4).
A. f (3) = 0, f (-2) = 21, f (5) = 6, f (-4) = 43 B. f (3) = –2, f (-2) = 18, f (5) = 4, f (-4) = 40 C. f (3) = 1, f (-2) = 20, f (5) = 7, f (-4) = 42 D. f (3) = –1, f (-2) = 19, f (5) = 5, f (-4) = 41 E. f (3) = –3, f (-2) = 16, f (5) = 2, f (-4) = 39
Find the fluid force exerted against the vertically submerged flat surface depicted in the diagram. Assume arbitrary units, and call the weight-density of the fluid w.
A. 
w
B. 
w
C. 4374w
D. 2187w
Add and simplify.
A. 37
B. 39
C. 38
D. 38
Solve.The concentration of a certain gas molecule in the atmosphere serves as an indicator of industrial air pollution. The data in the following table show the relationship of the estimated concentration of the molecule in the atmosphere, in parts per billion (ppb), to the year.
Determine the linear, quadratic, cubic, or quartic function that best fits the data.
A. f(x) = x4 + 0.00002x3 - 0.003x2 + 0.13x + 2.4 B. f(x) = -0.002x2 + 0.11x + 2.43 C. f(x) = 0.02x + 2.90 D. f(x) = 0.00002x3 - 0.003x2 + 0.13x + 2.4