Find the quadratic function that fits the set of data points.(2, 4), (3, 5), (5, 13)
A. f(x) = x2 - 4x + 8
B. f(x) = 3x2 - 4x - 8
C. f(x) = x2 - 2x + 4
D. f(x) = - x2 - 4x + 4
Answer: A
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Estimate the indicated component or components of the vector. Round to an appropriate number of significant digits.
= 20.2, ? = 58.1°; Find the horizontal component of v.
A. 17.1 B. 27.8 C. 10.7 D. 6.4
Decide whether the equation is an identity, a conditional equation, or a contradiction. Give the solution set.2
- x = -6 + 3(2 + 3x)
A. Conditional; {-3} B. Contradiction; ? C. Conditional; {6} D. Identity; {all real numbers}
Find the remaining zeros of f(x) given that c is a zero. Then rewrite f(x) in completely factored form.f(x) = x3 + 2x2 - 9x - 18; c = 3 is a zero
A. -3; f(x) = (x + 3)(x2 - x - 6) B. -3, -2; f(x) = (x + 3)(x + 2)(x - 3) C. -2; f(x) = (x + 2)(x2 + x - 9) D. -3, 2, 3; f(x) = (x + 3)(x - 2)(x - 3)
Perform the indicated operation. Write the result in standard form.
3
A. 64
B. 512
C. -4 + 4i
D. 64 + 12i