Use a power-reducing identity to find the exact value of the expression.sec2 (-15°)
A. 8 - 4
B. 4
C. 8 + 4
D. 
Answer: A
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Use the data to construct a frequency distribution.The ages of 30 swimmers who participated in a swim meet are as follows:18, 36, 30, 33, 40, 18, 50, 59, 19, 43, 51, 19, 26, 28, 41, 20, 29, 20, 58, 49, 24, 37, 46, 53, 33, 22, 22, 41, 30, 49Construct a grouped frequency distribution for the data. Use the classes src="https://sciemce.com/media/4/ppg__rrrr0613190819__f1q110g5.jpg" alt="" style="vertical-align: -4.0px;" />.
What will be an ideal response?
Solve the problem.Two forces, F1 of magnitude 60 newtons (N) and F2 of magnitude 70 newtons, act on an object at angles of 
and 
(respectively) with the positive x-axis. Find the direction and magnitude of the resultant force; that is, find 
Round the direction and magnitude to two decimal places.
What will be an ideal response?
Provide an appropriate response.Find the inflection point(s) for f(x) = 
x4 - x3 + 6.
A. (0, 6) and (2, 2) B. (0, 0) C. (0, 6) and (2, -4) D. (0, 0) and (2, 2)
Find the derivative.y = 
A. x7
B. 7x6
C. x7 - 1
D. 