Identify the critical points. Then use the test of your choice to decide which critical points give a local maximum value and which give a local minimum value. Give these values.f(?) = cos 2?, 0 < ? < 
A. Critical point: 
; local maximum f
= 
B. Critical point: 0; local minimum f(0) = -1
C. No critical points; no local maxima or minima on the interval 
D. Critical points: 0, 
; local maximum f(0) = 1; local minimum f
= 0
Answer: C
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Write the decimal as a fraction or mixed number in lowest terms.0.208
A. 
B. 
C. 
D. 
Simplify.Subtract (x + 1) from (3x - 3)
A. 2x - 2 B. 3x - 2 C. 2x - 4 D. 3x - 4
If students look to authorities such as the teacher, the answers in the back of a text, or a calculator to determine mathematical correctness rather than their own reasoning, they can be said to have:
a. External sources of conviction b. Internal sources of conviction c. A collapse metaphor d. An approximation metaphor
Write the number in words.22,000,674
A. Twenty-two million, six hundred seventy-four B. Twenty-two million, six thousand seventy-four C. Two million, two thousand, six hundred seventy-four D. Twenty-two hundred million, six hundred seventy-four