Find the indicated extreme value of f subject to the given constraint.Maximum of 
subject to 
A. Maximum: 6 at 
B. Maximum: 9 at 
C. Maximum: 6 at 
D. Maximum: 1 at 
Answer: B
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Solve the initial value problem.?
+ y = cos ?; ? > 0, y(?) = 1
A. y = 
, ? > 0
B. y = 
, ? > 0
C. y = 
, ? > 0
D. y = 
, ? > 0
Answer the following statement(s) true (T) or false (F)
Research has established that neither mixed review nor blocked practice has a place in modern mathematics classrooms.
Solve the problem.An object is propelled vertically upward from the top of a 128-foot building. The quadratic function 
models the ball's height above the ground, 
in feet, t seconds after it was thrown. After how many seconds does the object reach its maximum height? Round to the nearest tenth of a second if necessary.
A. 6.5 sec B. 13.6 sec C. 2 sec D. 0.6 sec
Provide an appropriate response.Decide whether the elimination method or the substitution method involves the least amount of work. Do not solve.x + 3y = 0x - 3y = 18
A. Elimination B. Substitution