Use the Intermediate Value Theorem to determine whether the polynomial function has a zero in the given interval.f(x) = -7x4 + 6x2 + 2; [-2, -1]
A. f(-2) = -86 and f(-1) = -1; no
B. f(-2) = 86 and f(-1) = -1; yes
C. f(-2) = 86 and f(-1) = 2; no
D. f(-2) = -86 and f(-1) = 1; yes
Answer: D
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Answer the question.Which of the following describes a study in which the patients do not know whether they are receiving the treatment or the placebo but the experimenters do know?
A. Case-control study B. Double-blind experiment C. Single-blind experiment D. Observational study
Find the intervals on which the function is continuous.y = 
A. continuous on the interval [
, ?)
B. continuous on the interval [-
, 
]
C. continuous on the intervals (-?, -
] and [
, ?)
D. continuous everywhere
Use the product rule to simplify the radical.
A. 14
B. 4
C. 2
D. 
Provide an appropriate response. Evaluate the function f (x) = 4x + 1 at the value f (-3).
A. -13 B. -8 C. 11 D. -11