Find the exact value of the expression if ? = 30°. Do not use a calculator.f(?) = cos ?Find 3 f(?).
A. - 
B. 
C. 
D. - 
Answer: B
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Determine if the sequence is decreasing or nondecreasing and if it is bounded or unbounded from above.an = 
A. Decreasing; unbounded B. Decreasing; bounded C. Nondecreasing; bounded D. Nondecreasing; unbounded
Let 
?
Use a Riemann sum with four subintervals of equal length 
to approximate the area of R (under the graph of f on the interval [0, 2]). Choose the representative points to be the left end points of the subintervals.
?
__________ sq units
?
Repeat previous part with eight subintervals of equal length 
.
?
__________ sq units
?
Compare the approximations obtained in previous parts with the exact area (12 sq units). Do the approximations improve with larger n?
What will be an ideal response?
Provide an appropriate response.A rectangle has a length of 
and a width of 
. What is the best estimate for its dimensions?
A. 11 by 8 B. 11 by 7 C. 12 by 8 D. 12 by 7
Find the value for the function.Find f(-x) when f(x) = 
.
A. 
B. 
C. 
D. 